Social Sciences, asked by manjeetsidhu97667, 7 months ago

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Answered by Sahithi234

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ᴛʜᴇ ɴᴏʙʟᴇ ɢᴀsᴇs ᴀʀᴇ ᴛʜᴇ ᴄʜᴇᴍɪᴄᴀʟ ᴇʟᴇᴍᴇɴᴛs ɪɴ ɢʀᴏᴜᴘ 18 ᴏғ ᴛʜᴇ ᴘᴇʀɪᴏᴅɪᴄ ᴛᴀʙʟᴇ. ᴛʜᴇʏ ᴀʀᴇ ᴛʜᴇ ᴍᴏsᴛ sᴛᴀʙʟᴇ ᴅᴜᴇ ᴛᴏ ʜᴀᴠɪɴɢ ᴛʜᴇ ᴍᴀxɪᴍᴜᴍ ɴᴜᴍʙᴇʀ ᴏғ ᴠᴀʟᴇɴᴄᴇ ᴇʟᴇᴄᴛʀᴏɴs ᴛʜᴇɪʀ ᴏᴜᴛᴇʀ sʜᴇʟʟ ᴄᴀɴ ʜᴏʟᴅ. ᴛʜɪs ᴄʜᴇᴍɪᴄᴀʟ sᴇʀɪᴇs ᴄᴏɴᴛᴀɪɴs ʜᴇʟɪᴜᴍ, ɴᴇᴏɴ, ᴀʀɢᴏɴ, ᴋʀʏᴘᴛᴏɴ, xᴇɴᴏɴ, ᴀɴᴅ ʀᴀᴅᴏɴ.

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