Question

An incomplete portion of periodic table is given. Observe the table and answer the
following questions
1
18
2
13 14 15 16 17
B
3 4 5 6 7 8 9 101112
A
E
a) Element having highest ionisation energy
b) Element which shows variable valency
c) Element forming oxide with formula MO
d) Element which outer electronic configuration ns.np​

Answer 1

Answer:

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Explanation:

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