Question

An element has 2 electrons in its N shell? 1.What is its atomic number? 2.state its position in periodic table? 3.i t is metal or non-meral? 4.state the name assigned to this group?

Answer 1

1.atomic number is 30
2. It is present in group 12 and period 4
3. Metal
4.transition metals

Answer 2

Answer:

a) the atomic no is 20

As , according to electronic configuration ---> 2,8,8,2 its sum is 20 I.e, the number of electrons

b) Electronic configuration - 2,8,8,2

c) its valency is 2

d) it's present in Group 2 and period 4 in periodic table

e) its a reducing agent.

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