Science, asked by patrisaniya, 5 months ago

an element belongs to period 2 and group 2th number of valence electron in the atom of the element is​

Answers

Answered by kaviya8248
1

Answer:

2 valence electrons

Explanation:

Be atomic no. 4. so 1st shell contains 2 electron

other 2 electron is in the valence shell

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