Q. 4.49 - An Introduction to General, Organic, and Biological Chemistry

Question

Write the electron arrangement for each of the following elements: (Example: sodium $2,8,1$)

a. Carbon
b. Argon
c. Potassium
d. Silicon
e. Helium  

f. Nitrogen 

Step-by-Step Solution

Answer

Electron arrangement of following elements are:

(a) Carbon $(2,4)$

(b) Argon $(2,8,8)$

(c) Potassium $(2,8,8,1)$

(d) Silicon $(2,8,4)$

(e) Helium $\left(2\right)$

(f) Nitrogen $(2,5)$ 

Part (a) Step 1: Given information

We need to find electron arrangement for carbon 

Part (a) Step 2: Explanation

Atomic number carbon = $6$

Symbol = $C$

Electron arrangement = $2,6$

Hence, electron arrangement of carbon is $2,6$.

Part (b) Step 1: Given information

We need to find electron arrangement for argon.

Part (b) Step 2: Explanation

Atomic number argon = $18$

Symbol = $Ar$

Electron arrangement = $2,8,8$

Hence, electron arrangement of carbon is $2,8,8$.

Part (c) Step 1: Given information

We need to find electron arrangement for potassium.

Part (c) Step 2: Explanation

Atomic number potassium = $19$

Symbol = $K$

Electron arrangement = $2,8,8,1$

Hence, electron arrangement of potassium is $2,8,8,1$.

Part (d) Step 1: Given information

We need to find electron arrangement for silicon.

Part (d) Step 2: Explanation

Atomic number silicon = $14$

Symbol = $Si$

Electron arrangement = $2,8,4$

Hence, electron arrangement of silicon is $2, 8, 4$.

Part (e) Step 1: Given information

We need to find electron arrangement for helium.

Part (e) Step 2: Explanation

Atomic number helium = $2$

Symbol = $He$

Electron arrangement = $2$

Hence, electron arrangement of helium is $2$.

Part (f) Step 1: Given information

We need to find electron arrangement for nitrogen.

Part (f) Step 2: Explanation

Atomic number nitrogen = $7$

Symbol = $N$

Electron arrangement = $2 , 5$

Hence, electron arrangement of nitrogen is $2, 5$.