1.

Define valency by taking example of silicon and oxygen​

Answer»

Aɴꜱᴡᴇʀ:-

Oxʏɢᴇɴ  \: ʜas \:  ᴠᴀʟᴇɴᴄʏ  \: ᴏf ⇒{2}^{ - }  \\  {o}^{2 - } ⇒it \: means \: it \: gains \: 2 \: electron \\ to \: octet \: complet \\  \\ Sɪʟɪᴄᴏɴ  \: ʜas \:  ᴠᴀʟᴇɴᴄʏ \:  ᴏf ⇒ 4 \\ ⇒it \: means \: it \: can \: lose \: or \: gain \:  \\ 4 \: electrons \: to \: complete \: its \: octet



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