Question

why does hydroden behave unusual in the periodic table.....​

Answer 1

Hʏᴅʀᴏɢᴇɴ ɪs ᴘʟᴀᴄᴇᴅ ᴀʙᴏᴠᴇ ɢʀᴏᴜᴘ ɪɴ ᴛʜᴇ ᴘᴇʀɪᴏᴅɪᴄ ᴛᴀʙʟᴇ ʙᴇᴄᴀᴜsᴇ ɪᴛ ʜᴀs ɴs1 ᴇʟᴇᴄᴛʀᴏɴ ᴄᴏɴғɪɢᴜʀᴀᴛɪᴏɴ ʟɪᴋᴇ ᴛʜᴇ ᴀʟᴋᴀʟɪ ᴍᴇᴛᴀʟs. Hᴏᴡᴇᴠᴇʀ, ɪᴛ ᴠᴀʀɪᴇs ɢʀᴇᴀᴛʟʏ ғʀᴏᴍ ᴛʜᴇ ᴀʟᴋᴀʟɪ ᴍᴇᴛᴀʟs ᴀs ɪᴛ ғᴏʀᴍs ᴄᴀᴛɪᴏɴs (H+) ᴍᴏʀᴇ ʀᴇʟᴜᴄᴛᴀɴᴛʟʏ ᴛʜᴀɴ ᴛʜᴇ ᴏᴛʜᴇʀ ᴀʟᴋᴀʟɪ ᴍᴇᴛᴀʟs.

Hᴏᴘᴇ ɪᴛ ʜᴇʟᴘs........ ❤❤

Answer 2

Hydrogen is placed above group in the periodic table because it has ns' electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H*) more reluctantly than the other alkali metals.

hope this helps:)