Question

Draw the configuration of the elements having the atomic number 18 and also write the valency of the same element. ​

Answer 1

Step-by-step explanation:

[Refer the attachment]

Electronic configuration of argon, (Atomic number = 18) is 1s² 2s² 2p⁶ 4s² 3p⁶

Since argon has fully filled outermost shell. It has no tendency to gain or loose electrons. So the valancy of argon with atomic number 18 is zero.

More :-

Electronic configuration of 10 elements

1. Hydrogen (H) - 1s¹
2. Helium (He) - 1s²
3. Lithium (Li) - [He] 2s¹
4. Beryllium (Be) - [He] 2s²
5. Boron (B) - [He] 2s² 2p¹
6. Carbon (C) - [He] 2s² 2p²
7. Nitrogen (N) - [He] 2s² 2p³
8. Oxygen (0) - [He] 2s² 2p⁴
9. Fluorine (F) - [He] 2s² 2p⁵
10. Neon (Ne) - [He] 2s² 2p⁶