Question

if the electronic configuration of an element 'E' is x,x3,(5-x) then the molecular mass of its oxide will be
1)102u
2)109u
3)120u
4)110.2u​

Answer 1

Answer:

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Answer 2

Answer:

102

Explanation:

It is Al ie., aluminium

Aluminium Oxide has mass 101.96u or 102u