Question

The charge of an electron of $-1.6\times {10}^{-19}$ coulombs. What will be the value of charge on $N{a}^{+}$ ion?

• A. $1.6\times {10}^{-19}C$
• B. $32\times {10}^{-19}C$
• C. $2.4\times {10}^{-19}C$
• D. $10\times 1.6\times {10}^{-19}C$

Answer 1

The correct option is A $1.6\times {10}^{-19}C$

Na has only one electron in valence shell as the electronic configuration of Na is 2, 8, 1.

Sodium-atom has no charge on it, $N{a}^{+}$ is formed by loss of one electron and therefore has charge

= $0-(-1.6\times {10}^{-19})$C

= $1.6\times {10}^{-19}$C

[Since, charge on one electron = $1.6\times {10}^{-19}$C]

Hence, option (A) is the correct answer.