Question

electronic configuration of al+ 3
a)2,8,3
b)2,8,8
c)2,8
d)2,8,8,3

Answer 1

(c) Al atomic number=13
Al+3=13-3=10
so, 2,8

Answer 2

Hey!

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Atomic number of aluminium (Al) = 13
Electronic configuration =

K shell - 2 electrons
L shell - 8 electrons
M shell - 3 electrons

Thus,

Electronic configuration of Al +3 = 2 , 8
Reason - Three (3) electron removal take place.
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Hope it helps...!!!