Question

The valency of sodium and chlorine is 1. Why?​

Answer 1

Answer:

Answer: Na has 7 electrons in its outer shell thus It is easier for Na to gain one electron rather than to lose 7 to achieve the stable octet. Sodium has 1 electron in its outermost shell. ... Thus, the valency of sodium is 1 not 7.

Answer 2

Explanation:

• The atomic number of Sodium (Na) is 11.
• Its electronic configuration is 2,8,1.
• Valency is nothing but the number of electrons present in the outermost shell.
• Here 1 electron is present in the last or outermost or valence shell.

• It needs to lose 1 electron to complete an octet. Hence valency is one.