Question

please tell me the answer for this question ​

Answer 1

Answer:

1. D element

2. C element

3. E element.

Explanation:

1. D is element in group 2 so it has valancy 2

2. Element C is least reactive because it is in 18th group it is noble gas

3. out of D and E, E has small atomic radius as when we move from left to right across a period atomic radius of elements decreases.

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Answer 2

Answer:

I)D

ii)C

iii)E

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