pls anybody tell is question answer
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Answer:
atomic no=4(equal to no of protons)
mass no=9(no of protons +no of neutrons)
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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
PLS MARK AS BRAINLIEST
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