Question

if an element is having 4 electrons in its outermost shell then it will gain or electrons lose electron​

Answer 1

Answer:

if an element is having 4 electrons in its valence shell then either it will donate electrons or will accept electrons

example silicon has 4 electrons in its valence shell and thus can either donate or accept 4 electrons

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Answer 2

Answer:

If an element has 4 electrons in its outermost shell , then it may be 4 lose electrons or gain electrons to make outermost shell octet.

for example : The atomic number of silicon is 14. Its electric configuration is 2 , 8, 4. So it may 4 lose electron then its electric configuration will be 2, 8 but when gain 4 electron then its electric configuration will be 2, 8, 8 and in both this case, it's outermost shell will become octet which means 8 electrons.

So , it depends on an atom that it may lose or gain electrons to make its outermost shell octet.

hope it helps dear...