Physics

The electronic configuration of an element X is:
1s² 2s² 2p6 3s2 3p5

Deduce the atomic number of X
To what group does it belong
Give two properties of the group to which the element X belong.
Identify element X by name.
Write a balanced equation to represent the reaction between the element X and hot concentrated NaOH?

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  1. 5

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    2. 👎
  2. Yes

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