1. Fill in the blank spaces in the table. Element Atomic Mass Protons Neutrons Electrons number Number 8 8. 26 12

Q: Antimony (Sb) has two naturally occurring isotopes: Sb-121 that has a percent abundance of 57.21%…

A: Given: Isotope of Antimony (Sb)  % abundance  Sb-121.  57.21%.  Sb-123. 42.79%.

Q: Is the statement consistent with Dalton’s atomic theory as it was originally stated? Why? All cobalt…

A: Dalton’s atomic theory  All matter is made of atoms. Atoms are indivisible and…

Q: Mass Mass Abundance Abundance Avg. mass (from Table 1) Symbol (from Table 1) (Avg. Mass) x (% Abun…

A: Isotopes are same elements that have same atomic number, that is same number of protons, but differ…

Q: What is an atom's mass number? number of protons plus number of neutrons O number of electrons O…

A: We have to predict correct option for mass number.

Q: 2. Fill in the following table using your knowledge of atom and periodic table. symbol Atomic Atomic…

A: Atomic number = Number of electrons  =  Number of protons Atomic Mass = Number of protons + Number…

Q: 1. A carbon atom with 7 neutrons, and a positive charge. 2. A nitrogen atom with 7 neutrons, 8…

A: Given We know about the number of protone ,nutron  and charge

Q: Use the atom builder interactive to determine whether each nucleus is stable or unstable.

A: For a stable nucleus the ration of numbers of neutrons and number of protons must be 1:1 for…

Q: The relative atomic mass of antimony is 121,8. Antimony exists as two isotopes - antimony 121 and…

A: Given, The relative atomic mass of antimony is 121.8 and it's two isotopes  antimony 121 and…

Q: The three stable isotopes of magnesium are Mg2", Mg5 and Mg. The relative atomic mass of magnesium…

A: Given three isotopes of Mg are : a). Mg24 b). Mg25  c). Mg26  Relative atomic mass of Mg = 24.3…

Q: Is the statement consistent with Rutherford’s nuclear theory as it was originally stated? Why?…

A: The basic unit of matter is called atom. Various theories were given to explain structure of atom.…

Q: What is the atomic number of magnesium? How many

A: Magnesium :- Atomic No.  = 12 No. of Proton = 12

Q: Periodic Table Matching - Part B Periodic Table Matching - Part C Argon (Ar.) A. Atomic mass is more…

A: Given, Elements from periodic table. We have to match the properties of each element with the given…

Q: Be sure to answer all parts. Give the number of protons, neutrons, and electrons in 197 Au protons,…

A: The given question is about calculating the number of Electrons, Protons, and Neutrons in 197Au -

Q: lectrons-Neutrons.pdf + 107% Element/ Atomic Mass Number Ion Number Atomic Mass Protons Neutrons…

A: The complete table for the above question is given below :

Q: How do you know how many electrons and neutrons are in a single element with just knowing the atomic…

A: Although information about atomic number and mass number, both are needed to determine the number of…

Q: A. What is the mass number of an atom of Iron ( atomic number 26) with 32 neutrons?  B. Is this…

A:

Q: 21. What force holds electrons near the nucleus of the atom? A. Strong nuclear force B.…

A: From the concept of periodic trends of elements and atomic mass of elements the following questions…

Q: An element has nine protons and 10 neutrons in the neutral atom. (a) How many electrons are present…

A: Given: Number of protons= 9 Number of neutrons = 10 To find: The number of electrons Atomic number…

Q: How much (in atomic mass units, amu) would 78 atoms of an element with atomic mass 107.18 weigh?…

A:

Q: 5. List the three subatomic particles and their properties.

A: To find: The list of three subatomic particles and their properties.

Q: Consider two elements: one is a gas and the other is a solid. Each contain identical number of…

A: If two elements have same number of electrons in their outer shell(valance shell) then the atoms…

Q: An atom of gadolinium has an atomic number of 64 anda mass number of 153. How many electrons,…

A: Gadolinium element belongs to the F-block element with the atomic number 64 and atomic mass 153 g.…

Q: Which atoms have the same mass number? Explain the answer.

A: ANSWER IS DISCUSSED BELOW :

Q: How is atomic number related to the identity of the atom? What might happen if the relationship…

A: The atomic number denotes  the number of protons in an atom of the element.

Q: Which atom(s) are isotopes? Explain your answer.

A: Isotopes are the types of any element that consists of different numbers of Neutron and similar…

Q: This homework is going to center around a completely made up element Maplenium. This metal has a…

A: Given data,Density of Ml=31.284lbs/dm3Mass of Ml=8.22×10-2Kg=0.18122lbsDimensions of…

Q: Fill in the blanks:a. Isotopes of an element differ in mass because the atomshave a different number…

A: The complete statements have to be provided.

Q: 1. Johanne Dobereiner noticed that when the elements in the atomic mass, the mass of the middle…

A: As you have posted a question with multiple parts, we will solve the first three subparts for you.…

Q: Atomic Atomic Number # of Mass # of # of Symbol Name of Element Number Protons Neutrons Electrons 11…

A:

Q: Rutherford's gold foil experiment determined that A) neutrons are in the nucleus. B) electrons have…

A: Rutherford bombarded the alpha particles on the very small sheet of gold. He observed that most of…

Q: (a) 2.8 19. Complete the following table. Number Number Number of Name o the Atom Species Atomic…

A: The atomic number of the species is equal to the number of protons and electrons present in the…

Q: What basic properties of the electron were reported with its discovery?

A: The electron was discovered by an English physicist J.J.Thomson. J.J.Thomsom performed a cathode-ray…

Q: 9. What does the atomic number on the periodic table indicate about an atom of that element? A the…

A: Option A will be correct.

Q: b. An atom that has a mass number of 39 and contains 19 protons. Potassium C. An atom with mass…

A:

Q: How many isotopes does this element have?

A: From the graph, it is cleared that the number of isotopes of the unknown element is 5.

Q: The element sulfur has an atomic number of 16 and an atomic mass of 32. How many neutrons are in the…

A: Atom consist of nucleus at its center and electrons revolve around the nucleus. Nucleus contains…

Q: Since there are many more Carbon-12 isotopes found in nature, the mass of Carbon-12 should carry the…

A:

Q: a)atomic number 9,mass number 18, charge of -1 b)atomic number 43,mass number 99, charge of -1 (c)…

A: We have to name the elements in parts (a), (b), (c), and (d) as follows in step 2:

Q: what is atomic mass? how is it computed

A: what is atomic mass? how is it computed?

Q: 1. A) Define atom. B) Define mass number, A. C) Define atomic number, Z.

A: We’ll answer the first three subparts. Please submit a new question to get the answer of other two…

Q: Element: Lead Name of isotope Number of Number of Abundance Abunda Protons Neutrons Mass (amu) (%)…

A: We are given isotopes of lead(Pb), and we have to find the number of protons, neutrons and %…

Q: Find the amount of positive electric charge in one mole of sodium atoms. (Note: The nucleus of a…

A: Sodium It has atomic number 11. It’s outer electronic configuration is 1s22s22p63s1. Charge of the…

Q: True or False...and why? a.) If you change number of protons, you have isotopes of an element b.)…

A: Given: a.) If you change number of protons, you have isotopes of an element b.) If you change number…

Q: 6. Briefly explain (i) Thompson Experiment OR (ii) Rutherford Experiment emphasizing the…

A: After the discovery of cathode ray, various experiment on cathode ray was conducted to know the…

Q: Mendeleev left empty spaces in his periodic table for elements he suspected existed but had yet to…

A: Mendeleev is the first who makes groups and rows. Mendeleev also left empty spaces in his periodic…