Question 1

Which block of the periodic table do transition metals occupy?

Accepted Answer

The d-block

Question 2

For transition metal cations, electrons are removed first from which orbital?

Accepted Answer

The highest principal quantum number s orbital

Question 3

What is the condensed electron configuration for Vanadium(III) ion, $$\mathrm{V$$^{3+}$$}$$?

Accepted Answer

$$[\mathrm{Ar}]\ 3d^2$

Question 4

Which of the following is the correct electron configuration for a neutral Tungsten (W) atom?

Accepted Answer

$$[\mathrm{Xe}]\ 4f$$^{14}$$\ 5d^4$\ 6s^2$

Question 5

Cadmium sulfate ($$\mathrm{$$CdSO_4$$}) $$contains $$\mathrm{Cd$$^{2+}$$}. $$What is the electron configuration for $$\mathrm{Cd$$^{2+}$$}$$?

Accepted Answer

$$[\mathrm{Kr}]\ 4d$$^{10}$$

Question 6

Which of the following ions has the same electron configuration as $$\mathrm{Ti$$^{2+}$$}$$?

Accepted Answer

$$\mathrm{V$$^{3+}$$}$$

Question 7

When forming $$\mathrm{Fe$$^{3+}$$}$$ from neutral iron, which electrons are removed?

Accepted Answer

Two from $$4s$$ and one from $$3d$$

Question 8

Which of the following best explains why transition metals often form colored compounds?

Accepted Answer

Their d electrons can absorb visible light, causing electronic transitions

Question 9

What is the electron configuration for $$\mathrm{Ti$$^{2+}$$}$$?

Accepted Answer

$$[\mathrm{Ar}]\ 3d^2$

Question 10

Which statement about the electron configuration of transition metal ions is correct?

Accepted Answer

Electrons are removed from the s orbital with the highest principal quantum number first

Question 11

A sample contains $$\mathrm{Cr$$^{3+}$$}$$ ions. What is the condensed electron configuration for $$\mathrm{Cr$$^{3+}$$}$$?

Accepted Answer

$$[\mathrm{Ar}]\ 3d^3$

Question 12

Which of the following best describes the electron configuration of $$\mathrm{Cu$$^{+}$$}$$?

Accepted Answer

$$[\mathrm{Ar}]\ 3d$$^{10}$$

Question 13

Which transition metal ion is isoelectronic with $$\mathrm{Zn}$$?

Accepted Answer

$$\mathrm{Cu$$^{2+}$$}$$

Question 14

Which of the following ions has a completely filled d subshell?

Accepted Answer

$$\mathrm{Cd$$^{2+}$$}$$

Question 15

Which of the following is the correct electron configuration for $$\mathrm{Mn$$^{2+}$$}$$?

Accepted Answer

$$[\mathrm{Ar}]\ 3d^5$

Question 16

Which of the following ions would have the electron configuration $$[\mathrm{Ar}]\ 3d^6$?

Accepted Answer

$$\mathrm{Fe$$^{2+}$$}$$

Question 17

A patient is treated with a compound containing $$\mathrm{Co$$^{3+}$$}. $$What is the electron configuration for $$\mathrm{Co$$^{3+}$$}$$?

Accepted Answer

$$[\mathrm{Ar}]\ 3d^6$

Question 18

Which of the following ions has the same number of electrons as $$\mathrm{Kr}$$?

Accepted Answer

$$\mathrm{Rb$$^{+}$$}$$

Question 19

Which of the following is the correct electron configuration for $$\mathrm{Mo$$^{3+}$$}$$?

Accepted Answer

$$[\mathrm{Kr}]\ 4d^3$

Electron Configurations of Transition Metals

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