Chemistry, asked by srivastavajuli1975, 8 months ago

pls anybody tell is question answer

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Answered by ishachoudhury4

1

Answer:

atomic no=4(equal to no of protons)

mass no=9(no of protons +no of neutrons)

Answered by sharanya200636

3

Answer:

Answered

Explanation:

Atomic No. = No.of protons or No.of Electrons

= 4

Mass No. = Protons +Neutrons

= 4+5=9

Atomic No= 4

Mass No= 9

Extra: This element is Beryllium (Be).

Period 1, Group 14

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