Of the atoms listed below, which one will have at least one electron in its d orbital?

A. Mg

B. K

C. S

D. Cr

E. none of the above

Question

Chemistry

Alfonso Price

3 September, 08:59

Of the atoms listed below, which one will have at least one electron in its d orbital?

A. Mg

B. K

C. S

D. Cr

E. none of the above

+4

Answers (1)

Know the Answer?

Tania Walton · Answer 1

D. Cr

Explanation:

In order to determine which atom has at least one electron in its d orbital, we have to write their theoretical electron configurations.

₁₂Mg 1s² 2s² 2p⁶ 3s² ₁₉K 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ ₁₆S 1s² 2s² 2p⁶ 3s² 3p⁴ ₂₄Cr 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁴

Cr has 4 electrons in d orbitals. Cr belongs to the d-block in the periodic table.

Of the atoms listed below, which one will have at least one electron in its d orbital?A. MgB. KC. SD. CrE. none of the above

Of the atoms listed below, which one will have at least one electron in its d orbital?

A. Mg

B. K

C. S

D. Cr

E. none of the above