Question

What is the valency of Magnesium ?

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Answer 1

Explanation:

2 +

Mᴀɴɢᴇsɪᴜᴍ ʜᴀs ᴠᴀʟᴇɴᴄʏ ᴇǫᴜᴀʟ ᴛᴏ 2 + ʙᴇᴄᴀᴜsᴇ ᴛʜᴇ ᴇʟᴇᴄᴛʀᴏɴɪᴄ ᴄᴏɴғɪɢᴜʀᴛɪᴏɴ ᴏғ MG ɪs [2,8,2] . ᴛʜᴇ ɴᴇᴀʀᴇsᴛ ɴᴏʙʟᴇ ɢᴀs ᴛᴏ ᴍᴀɢɴᴇsɪᴜᴍ ɪs ɴᴇᴏɴ ᴡɪᴛʜ ᴇʟᴇᴄᴛʀɪᴄ ᴄᴏɴғɪɢᴜʀᴛɪᴏɴ ᴏғ [2,8], ᴛᴏ ᴀᴄʜɪᴇᴠᴇ ᴛʜɪs sᴛᴀʙʟᴇ ᴇʟᴇᴄᴛʀᴏɴɪᴄ ᴄᴏɴғɪɢᴜʀᴛɪᴏɴ Mɢ ᴄᴀɴ ʟᴏsᴇ 2 ᴠᴀʟᴇɴᴄᴇ ᴇʟᴇᴄᴛʀᴏɴs , ʜᴇɴᴄᴇ ɪᴛs ᴠᴀʟᴇɴᴄʏ ɪs 2 + .

ʜᴏᴘᴇs ɪᴛ ᴡɪʟʟ ʜᴇʟᴘ ᴛᴏ ᴜ ..

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Answer 2

Answer:

2 +

Magnesium has valency equal to 2 + because the electronic configuration of Mg is [2,8,2]. The nearest noble gas to magnesium is neon with electronic configuration of [2,8], to achieve this stable electronic configuration Mg can lose 2 valence electrons, hence its valency is 2 + .