how to find the valency of an element.....
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- ᴛᴏ ғɪɴᴅ ᴛʜᴇ ᴠᴀʟᴇɴᴄʏ ᴏғ ᴀɴ ᴇʟᴇᴍᴇɴᴛ, ɪᴛ ɪs ᴀʙsᴏʟᴜᴛᴇ ᴛʜᴀᴛ ᴡᴇ ᴍᴜsᴛ ᴋɴᴏᴡ ᴛʜᴇ ᴀᴛᴏᴍɪᴄ ɴᴜᴍʙᴇʀ ᴏғ ᴛʜᴀᴛ ᴇʟᴇᴍᴇɴᴛ. ᴛʜᴇ ᴀɴsᴡᴇʀ ɪs 4. ғᴏʀ ᴇʟᴇᴍᴇɴᴛs ᴡɪᴛʜ ᴠᴀʟᴇɴᴄᴇ ᴇʟᴇᴄᴛʀᴏɴs >4, sᴜʙᴛʀᴀᴄᴛ ɪᴛ ғʀᴏᴍ ɴᴜᴍʙᴇʀ 8. ғᴏʀ ᴇxᴀᴍᴘʟᴇ ғʟᴜᴏʀɪɴᴇ ᴛʜᴇ ᴠᴀʟᴇɴᴄʏ ɪs 2,7 ᴀɴᴅ ᴛʜᴇ ᴠᴀʟᴇɴᴄᴇ sʜᴇʟʟ ɴᴜᴍɴᴇʀ ɪs 7.
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