Suggest a reason why copper(II) compounds are often colored but copper(I) compounds are colorless.

Q: In terms of the theory of color absorption, explain two ways that a solution can be blue.

A: Firstly understand the concept of complementary color theory, when a matter connects with white…

Q: Which one of the following elements is an example of a transition metal in period 4? а. Carbon O b.…

A: Transitions metals are also known as d-block elements. These are present in the middle of the…

Q: why Ti^3+ is purple while Ti^4+ is colorless ?

A: Atomic number of titanium (Ti) is 22. The electronic configuration of titanium (Ti) is 1s22s22p63…

Q: Write electron configurations for each transition metal.(a) Zn (b) Cu (c) Zr (d) Fe

A: The above elements are the first row of transition metal. Its outer most orbitals are 4s and 3d. So,…

Q: Explain why atomic radii of elements in the third row of the transition metals are no larger than…

A: Concept introduction: Atomic radii is the distance between the nucleus and the outermost shell…

Q: Why are metals commonly white but copper and gold are colored?

A: Answer - According to the question - Metal are white because  in  smooth surface these metal will be…

Q: Why are almost all metals in nature found as ionic compounds in ores instead of being in the pure…

A: A question about the properties of metals, which is to be accomplished.

Q: Which oxide, CrO3 or CrO, is more acidic in water? Why?

A: To determine the nature of oxide whether it is acidic or basic, we have a general observation that…

Q: How do the transition metals in Period 4 affect the pattern ofionization energies in Group 3A(13)?…

A: Concept introduction: Ionization energy: The required energy to remove an outermost electron from a…

Q: Assign a reason for each of the following observations:(i) The transition metals (with the exception…

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Q: Why is titanium metal called as strategic metal? Mention two of its properties which makes it so…

A: Titanium is called strategic metal because it is used for making certain war equipments.   The…

Q: Determine whether the following complexes are likely paramagnetic or diamagnetic. A. [Fe(CO)6]2+ B.…

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Q: Explain why the transition metals in periods 5 and 6 have nearly identical radii in each group.

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Q: Why is zinc not regarded as a transition element?

A: Transition metal has incomplete d subshell in one or more than one oxidation state.

Q: Among the period 4 transition metals, which elements do not form ions where there are partially…

A: Zinc has completely filled d orbital, it loses 2 electrons from 4s orbital to form Zn+2 ion.

Q: What is a transition metal? elements that have incompletely filled 4f subshells or that readily give…

A: D block elements are referred as transition elements.

Q: Which element has the higher first ionization energy, Cu or Au?

A: The first ionization energy is the energy required to remove an electron from a neutral atom to form…

Q: Would you expect salts of the gold(I) ion, Au+, to be colored? Explain.

A: The presence of a partially filled d orbital is responsible for the coloration in ions because of…

Q: Gold is the most electronegative transition metal. Explain?

A: Electronegative character is the tendency of an atom to pull the bonding pair of electrons.

Q: 15. Transition elements or their compounds have the following characteristics. 1. Some are…

A: The elements in which the d-orbitals are partially filled known as the transition elements. The…

Q: If copper is able to displace magnesium, and magnesium is able to displace lead, what does this mean…

A: From the given data we can infer that , Copper is more reactive than magnesium , and Magnesium is…

Q: Sketch a diagram showing the formation of energy levels from the valence orbitals for Rb Rb(2) Rb(3)…

A: The atomic number for Rb atom = 37

Q: Which of these oxides is not amphoteric Mgo a O A1203 .b O Zno.cO Sno.d

A: Amphoteric oxides are those metal oxides which show basic as well as acidic behaviour.  So, first we…

Q: 5. What would you predict about the solubilities of beryllium salts and radium salts relative to the…

A: If we compare the solubility of beryllium salts to the other Group IIA metal salts, we will notice…

Q: Which of the following classifications are the most accurate? Select one: O a. Ce, Eu, Gd, Er: inner…

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Q: Transition that causes to the characteristic blue color of K, Re,Cl will be A) σ-σ B) 7 – 7* С) л —…

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Q: Why the reactivities of either Co(III) or Cr(III) are very low?

A: When the ligand field stabilization energy of the metal ion is low  then the metal ion is less…

Q: Cr(CO)6 is stable while Cr(NH3)6 is not.

A: In [Cr (NH3)6]+3, unpaired electrons are present so paramagnetic. In [Co (NH3)6] +3, all electrons…

Q: Why are tetrahedral complexes high spin?

A: In tetrahedral molecular geometry, a central atom is located at the center of four substituent…

Q: 4) Write the full electron configuration for the transition metal, cobalt, Ni.

A: Electronic configuration is distribution of electrons in various energy level around the nucleus.…

Q: Name two metals which occur in nature as oxides.

A: Metals are the elements which lose electrons to acquire a stable electronic configuration. When loss…

Q: Why ZnO appears yellow on heating?

A: The interruption of patterns in the solid crystal leads to the formation of defects.Stoichiometric…

Q: Which of the following transition metals would be expected to have the smallest atomic radius? A)…

A: We know that, As we move from left to right in 4d series, then size decreases to 4d5 tgen after…

Q: <p>Explain why transition metals exhibit multiple oxidation states instead of a single…

A: Unlike main-group metals that tend to exhibit only one oxidation state, the transition metals often…

Q: Explain the physical properties, electron configurations, oxidation states, and magnetic properties…

A: 1. They are good conductor of heat and electricity. 2. Atomic radii of transition elements lie in…

Q: a) b) c) Calculate the M oxidation states: Draw the structures: What are the colours and why?…

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Q: 2.The atomic number of iron is 24 what is the correct electronic configuration of FE3+ 3.The shape…

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Q: <p>When a transition metal atom forms an ion, which electrons are lost first?

A: Transition metal atom forms ions lost by its valence electrons.

Q: MCQ 119: When magnesium is burnt on Bunsen burner it gives flame of color A. bright white B. off…

A: In this question we have to find out the color of flame when the Magnesium is burnt on Bunsen…

Q: What is the chemical formula of Tetraquadibromochromium(III) chloride?

A: Given,  The name of the complex compound is: Tetraquadibromochromium(III) chloride The chemical…

Q: When the Nickel (II) ion reacts with ammonia, most students notice a colour change occurring. Can…

A: Reaction of nickel with ammonia Nickel(II)-ions are precipitated by ammonia as a green…

Q: • a transition metal in the fourth period • a metal in the third period a non-metal in group 6A, or…

A: All the elements are arranged in the periodic table in order of atomic number.  There are total 7…

Q: Which one of the following elements has higher fourth ionization energy?   Sc (Z = 21) or Ti (Z =…

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Q: List the elements: H, Sn, Mg, Cu, Pb, Ag, Zn and Fe from the most active to the least active.…

A: The ability of an atom to release electrons present in its valence shell determines its reactivity.…

Q: Write the five balanced reactions of the copper cycle, including phase symbols. Number them 1…

A: Copper cycle involves five reactions.In the first reaction, copper metal is oxidized by nitric acid…