Question

Question 110 (ii)

Science Application An atom consists of charged particles called electrons and protons. Each proton has a charge of +1 and each electron has a charge -1. Remember the number of electrons is equal to the number of protons, while answering this question :
What will be the charge on an atom, if it loses an electron?

Answer 1

If an atom loses an electron, it will have (a - 1) electrons and (a) protons.
$\therefore$ Charge in one electron = (-1)
$\therefore$ Charge in (a - 1) electrons = (a - 1) $\times$ (-1) = -(a - 1) = (1 - a)
$\therefore$ Charge in one proton = (+1)
$\therefore$ Charge in a protons = (+1) $\times$ a = $+a$
Hence, total charge on the atom = Charge of electrons + Charge of protons = 1 - a + a = +1