Question

. The Atomic number of the given element is _________ 2. It's Atomic Mass number is __________ 3. It's Electronic configuration is __________ 4. It's Valency is _________

2 points

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Answer 1

Answer:

If atomic no. of element is 2

Then-

Atomic mass-4

Electronic configuration-2

valency-2

Answer 2

Explanation:

1. the number of protons

2. the number of nucleons

3. the representation of the arrangement of electrons in its shells

4. the capacity to react with other compounds or elements.