Chapter 23: Q 13P (page 1059)

Question: Using the periodic table to locate each element, write the electron configuration of (a) Zn (b) Mn (c) Re.

Short Answer

Expert verified

Electron Configuration of element Zn is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{10}$ or $[Ar] 4 s^{2} 3 d^{10}$ .
Electron Configuration of element Mn is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{5}$ or $[Ar] 4 s^{2} 3 d^{5}$ .
Electron Configuration of element Re is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{10} 4 p^{6} 5 s^{2} 4 d^{10} 5 p^{6} 6 s^{2} 4 f^{14} 5 d^{5}$ or $[Xe] 6 s^{2} 4 f^{14} 5 d^{5}$ .

Step by step solution

Electron Configuration

The distribution of electrons in atomic or molecular orbitals of an atom, molecule, or other physical structure is known as electron configuration.

Electron Configuration of element

(a) Based on the periodic table,has the atomic number of $30$ , therefore it has $30$ electrons with this electron configuration:

$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{10}$ or $[Ar] 4 s^{2} 3 d^{10}$ .

(b) Based on the periodic table, Mn has the atomic number of $25$ , therefore it has $25$ electrons with electron configuration:

$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{5}$ or $[Ar] 4 s^{2} 3 d^{5}$ .

(c) Based on the periodic table, Re has the atomic number of $75$ , therefore it has $75$ electrons with this electron configuration:

$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{10} 4 p^{6} 5 s^{2} 4 d^{10} 5 p^{6} 6 s^{2} 4 f^{14} 5 d^{5}$ or $[Xe] 6 s^{2} 4 f^{14} 5 d^{5}$ .

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Question: Using the periodic table to locate each element, write the electron configuration of (a) Zn (b) Mn (c) Re.

Short Answer

Step by step solution

Electron Configuration

Electron Configuration of element

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