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Valence electron in silicon is 4 and in oxygen is 6

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can u tell how
ohhhhhhhhh by calculating the last shells electrons ??
ohkkkkk thnks dude ..

The outer  most energy level in an atom is called valency shell and electrons placed in this shell known as valence electrons.

Silicon (si) : 3s
² 3p² ( Ne).

so, calculate the no.of electrons which are in power part. so 2+2 = 4.

silicon valence electrons= 4.
Oxygen : 1s
² 2s² 2p⁴.

so, calculate the no. of electrons which are in the power part. so, 2+2+4 = 6.

so, oxygen valence electrons = 6.

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