Science, asked by bar0mo8niJyofati, 1 year ago

An atom has 4 protons and 5 neutrons what is its valency

Answers

Answered by pahiroy1221
13
the valency of the element is 2 
and,
the element is Beryllium . 


i hope it helps......
Answered by purnima1
5
valency= 2
because in k shell 2 electron is comsumed and 2 electron is left
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