Question

Electrons present in outermost shell of Aluminium is *
a) 2
b) 4
c) 3
d) 1
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Answer 1

Answer:

c. 3

Explanation: Aluminium is 13th element in periodic table. So therefore it has 13 electrons. The K-shell has 2 electrons, the L-Shell has 8 electrons and the M-Shell has 3 electrons. The outermost shell is M-Shell for Aluminium and therefore there are 3 electrons in the outermost shell of Aluminium.