Q: Give a reason why hydrogen might be placed along with the group 1A elements of the periodic table.
A: Periodic table gives the information of chemical elements arranged according to atomic number,…
Q: Which of the following lists contain an alkali metal, a halogen and a metalloid (semi-metal) in that…
A: In the periodic table, alkali metals are Group-1 elements. Halogens are Group-17…
Q: Describe the development of the Periodic Table?
A: Modern periodic table is made by Dmitri Mendeleev and Lothar Meyer. This modern period law states…
Q: Draw the energy-level diagram for the atom of each of the following elements: (a) boron (b)…
A: The energy-level diagram for the atom of each of the following elements has to be drawn.
Q: In what physical state does chlorine exist at −65°C?
A: The physical state of an element depends upon its boiling point and melting point temperatures.
Q: Which has the largest atomic radius? Sulfur zinc potassium sodium
A: Atomic radius The distance between the nucleus and outermost shell is known as atomic radius. As, we…
Q: Which of the following describes the element Ba? Choose all that apply:(a) is very reactive as a…
A: The element given is Barium i.e Ba.
Q: Write the balanced chemical equation for the reaction of solid potassium with liquid water?
A: Given: Reaction of solid potassium with liquid water.
Q: Atoms of which element, indicated by letter on the periodic table, is expected to have the smallest…
A: Atomic radius in periodic table: In period moving left to right atomic radius decreases,. And In…
Q: Which of the following elements is an halogen?
A: The elements which belong to the 17th group of the modern periodic table are called halogens. The…
Q: Classify each of the following elements as a main-group or transition element. Also,specify whether…
A: Given elements: Na, Re, S, I, Kr, Mg, U, Si, B, Al, As, H.
Q: Is astatine a nonmetal metal or metalloid
A:
Q: Choose one group of representative elements (main group elements) and discuss its chemistry by…
A: The chemically active elements whose outer orbitals are not completely fulfilled is known as…
Q: Write the name of element and classify it as a metal, nonmetal, or metalloid. Ba
A:
Q: (a) Are the elements calcium, barium, and radium in the same group or same period in the periodic…
A: A horizontal row in the periodic table is known as periods and a vertical column in the periodic…
Q: The element (X) is located in the third period and the group (5A) and the element (Y) is located in…
A: The atomic number of the element located between them is 33 & the name of the element is…
Q: Arrange in order of increasing nonmetallic character. (a) the period 4 elements Ga, Ge, Ti (b) the…
A: Non metallic character is tendency to gain electron. Non-metals gains the electron in chemical…
Q: In Groups 1A-7A, name all elements in each group that has the smallest atomic radius?
A: Atomic radius of an atom is dependent upon the following factors: Effective nuclear charge…
Q: Write the name of element and classify it as a metal, nonmetal, or metalloid. O
A:
Q: Little is known about the properties of astatine, At, becauseof its rarity and high radioactivity.…
A: Due to Astatine high radioactivity, very less information we are having: a) Astatine is solid…
Q: Small daily doses of lithium carbonate taken orally are often given to treat manic-depressive…
A: Given compound is lithium carbonate. The formula of lithium carbonate is given below:
Q: Differentiate between metal and non-metal on the basis of their chemical properties.
A: Metals are lustrous and opaque elements which are good conductor of heat as well as electricity. And…
Q: 3. Write down the equation of the highest ionization energy of Sulfur (S) and explain why it is the…
A: Ne3S23P4→Ne+6e-
Q: The 18O:16O abundance ratio in some meteorites is greater than that used to calculate the average…
A: The average atomic mass formula is given as: Average atomic mass=∑i=1n(Atomic mass of an isotope x…
Q: Which of the following elements would have chemical properties similar to Ca K, Ba, Kr, or Sc
A: Elements from same group have same chemical properties
Q: Part 6: 6A. Name the following compounds: a. Nal b. СаCl, c. NF, d. CaCO, еe. Zn(ОH), f. Ag,SO, g.…
A: Ionic compounds are neutral compounds made up of positively charged ions called cations and…
Q: Write the name of element and classify it as a metal, nonmetal, or metalloid. I
A: Metals are opaque, lustrous elements that are good conductors of heat and electricity. Most metals…
Q: Give the symbol of the element that has the largest atomic size in Period
A:
Q: Write the symbol for element and classify it as a metal, nonmetal, or metalloid. fluorine
A: Periodic table represents the systematic arrangement of elements in which the properties of these…
Q: Rank the following elements by increasing first ionization energy: sulfur, oxygen, neon, aluminum Al
A: Ionization energy refers to the energy required to remove one mole of the most loosely held…
Q: Which of the following groups of elements are not all metals? O AI, Zn, As Bi, W, Mo Ba, Sr, Pb Ag,…
A: an element is said to be a metal if it easily loses its valence electron in favorable condition.
Q: What do the elements sulfur (S), nitrogen (N), phosphorus (P), and bromine (Br) have in common? A.…
A: The elements Sulfur(S), nitrogen(N), phosphorus(P), and bromine(Br) all situated on the right-hand…
Q: Calculate the radius of the copper atom, given that copper has an fcc crystalstructure, a density of…
A: Given data Atomic mass = 63.55 g/mole density = 8.89 g/cm3 Copper has FCC Unit cell Standard…
Q: Among Cl-, Ar, K+, Ca2+, Br-, Kr, Rb+, and Sr2+, which one has the largest radius?
A: Isoelectronic species are those species which have same number of electrons in them. And the radius…
Q: ving: Why are the elements' atomic masses not in strict increasing order in the periodic table even…
A: As per the policy, we are only allowed to answer only 1st question. To get the answer of other…
Q: It the type of energy that happens in the core of the atom a. solar b. thermal c. nuclear d.…
A: Solar as the name suggest energy that come from heat and light of sun.
Q: Which of the following elements would you expect to have chemical properties most similar to those…
A: on the basis of the periodic table, we can say that the elements that belong to the same group have…
Q: Choose the block of the periodic table where phosphorus is located. O s-block O f-block O outer…
A:
Q: Arrange Be, C, K, and Ca in order of increasing atomic radius
A: Order of increasing atomic radius C < Be < Ca < K
Q: name of the element with the largest atomic radius in Period 6
A:
Q: the measured EA of Na is -53 KJ/mol. What is the physical meaning of the fact that the EA is a…
A: EA means the electron affinity . The amount of heat is released when 1 electron is added to the…
Q: Which element is solid at room temperature and a good conductor of heat and electricity
A: We have to find in the given options which element is solid at room temperature and a good conductor…
Q: Give the names and chemical symbols for the three isotopes of hydrogen.
A: The name and chemical symbols for the three isotopes of hydrogen has to be given,
Q: Which of the following describes the element I? Choose all that apply. is very reactive as a…
A: I is very reactive non-metal (i is belong to group 17 . in group 17 all metal are non metal) I…
Q: which element is a metal in period 5 of the periodic table
A: Periodic table:In a periodic table elements are arranged by atomic number, electron configuration,…
Q: Identify the group, period, block, and identity of each element, the characteristics of that type of…
A:
Arrange in order of increasing atomic size.
(a) the period 3 elements Cl, Na, and Ar
(b) the Group 2A elements Ca, Be, and Mg
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Arrange in order of increasing nonmetallic character. (Use the appropriate <, =, or > symbol to separate substances in the list.) (a) the Period 4 elements V, Ge, and K (b) the Group 5A elements N, As, and Bi Arrange in order of increasing atomic size. (Use the appropriate <, =, or > symbol to separate substances in the list.) (a) the Period 3 elements Mg, Si, and Ar (b) the Group 2A elements Ca, Ba, and SrArrange in order of increasing nonmetallic character. (a) the period 4 elements Ga, Ge, Ti (b) the Group 5A elements P, Bi, and NArrange in order of increasing ionization energy (a) the Group 1A elements Na, Cs, and K(b) the Period 4 elements As, Ca, and Br
- Chlorine reacts with oxygen to form Cl2O7. (a) What is the name of this product (see Table 2.6)? (b) Write a balanced equation for the formation of Cl2O7(l) from the elements. (c) Under usual conditions, Cl2O7 is a colorless liquid with a boiling point of 81℃. Is this boiling point expected or surprising? (d) Would you expect Cl2O7 to be more reactive toward H+(aq) or OH− (aq)? Explain. (e) If the oxygen in Cl2O7 is considered to have the -2 oxidation state, what is the oxidation state of the Cl? What is the electron configuration of Cl in this oxidation state?Boron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of 19.9% and 80.1%, respectively. (a) In what ways do the two isotopes differ from each other? Does the electronic configuration of 10B differ from that of 11B? (b) Draw the orbital diagram for an atom of 11B. Which electrons are the valence electrons? (c) Indicate three ways in which the 1s electrons in boron differ from its 2s electrons. (d) Elemental boron reacts with fluorine to form BF3, a gas. Write a balanced chemical equation for the reaction of solid boron with fluorine gas. (e) ΔHf° for BF3(g) is -1135.6 kj/mol. Calculate the standard enthalpy change in the reaction of boron with fluorine. (f) Will the mass percentage of F be the same in 10BF3 and 11BF3? If not, why is that the case?According to Coulomb’s law, what happens to the potential energy of two oppositely charged particles as they get closer together?(a) Their potential energy decreases.(b) Their potential energy increases.(c) Their potential energy does not change.
- Arrange in order of increasing nonmetallic character (a) the Period 3 elements P, Cl, and Na(b) the Group 7A elements F, Br, and ClBoron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of 19.9% and 80.1%, respectively.(a) In what ways do the two isotopes differ from each other? Does the electronic configuration of 10B differ from that of 11B? (b) Drawthe orbital diagram for an atom of 11B. Which electrons are the valence electrons? (c) Indicate three ways in which the 1s electrons inboron differ from its 2s electrons. (d) Elemental boron reacts with fluorine to form BF3, a gas. Write a balanced chemical equation forthe reaction of solid boron with fluorine gas. (e) ΔHf° for BF31g2 is -1135.6 kJ>mol. Calculate the standard enthalpy change in thereaction of boron with fluorine. (f) Will the mass percentage of F be the same in 10BF3 and 11BF3? If not, why is that the case?(b) A new element, "X", is discovered and found to have 2 electrons in its outer level. Is X a metal or non-metal? Predict the formula its ion would have in any ionic compounds it forms.
- Q1. This question is about atomic structure. (a) Write the full electron configuration for each of the following species. CH Fe2+ (b) Write an equation, including state symbols, to represent the process that occurs when the third ionisation energy of manganese is measured. (c) State which of the elements magnesium and aluminium has the lower first ionisation energy Explain your answer. (d) A sample of nickel was analysed in a time of flight (TOF) mass spectrometer. The sample was ionised by electron impact ionisation. The spectrum produced showed three peaks with abundances as set out in the table. m/z Abundance /% 58 61.0 60 29.1 61 9.9 Give the symbol, including mass number, of the ion that would reach the detector first in the sample. Calculate the relative atomic mass of the nickel in the sample. Give your answer to one decimal place. Page 2 of 12 Symbol of ion Relative atomic massWhich of the following statements about the hydrogen atom is FALSE. (A) The hydrogen atom is neutral. (B)The hydrogen atom has a uniform distribution of charge. (C)The hydrogen atom is not polar. (D)The hydrogen atom is spherically symmetric.The oxygen and nitrogen families have some obvious similarities and differences.(a) State two general physical similarities between Group 5A(15) and 6A(16) elements.(b) State two general chemical similarities between Group 5A(15) and 6A(16) elements.(c) State two chemical similarities between P and S.(d) State two physical similarities between N and O.(e) State two chemical differences between N and O.