Question

Tha number of protons in an atoms of an element A is 19 then, the number of electron in its ion A+ is ______ .
(a) 18
(b) 19
(c) 20
(d) 21​

Answer 1

Answer:

20 is the right Answer. ☺

Answer 2

Answer:

18 electron

reason - because a plus dign gives an additional proton this means proton in a plus ion is 20 which denotes loss of electron