The charge of an electron is 1.6 × 10–19 coulombs. What will be the value of charge on Na+ ion ?A 1.6 × 10–19 C B 3.2 × 10–19 C C 2.4 × 10–19 C D 10 × 1.6 × 10–19 C
Question
The charge of an electron is 1.6 × 10–19 coulombs. What will be the value of charge on Na+ ion ?A 1.6 × 10–19 C B 3.2 × 10–19 C C 2.4 × 10–19 C D 10 × 1.6 × 10–19 C
Solution
The charge on a Na+ ion is equal to the charge of a single electron. This is because the "+" in Na+ indicates that it has lost one electron, and therefore has one unit of positive charge.
The charge of an electron is given as 1.6 × 10^-19 coulombs. Therefore, the charge on a Na+ ion, which has lost one electron, is also 1.6 × 10^-19 coulombs.
So, the correct answer is A: 1.6 × 10^-19 C.
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