explain variation of melting points among the transition metal series
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The melting and boiling points of transition elements increases from scandium (1530 ∘C) to vanadium (1917 ∘C). They increase because as we go across the group, we have more unpaired (free) electrons.
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ᴛʜᴇ ᴍᴇʟᴛɪɴɢ ᴀɴᴅ ʙᴏɪʟɪɴɢ ᴘᴏɪɴᴛꜱ ᴏꜰ ᴛʀᴀɴꜱɪᴛɪᴏɴ ᴇʟᴇᴍᴇɴᴛꜱ ɪɴᴄʀᴇᴀꜱᴇꜱ ꜰʀᴏᴍ ꜱᴄᴀɴᴅɪᴜᴍ (1530 ∘ᴄ) ᴛᴏ ᴠᴀɴᴀᴅɪᴜᴍ (1917 ∘ᴄ). ᴛʜᴇʏ ɪɴᴄʀᴇᴀꜱᴇ ʙᴇᴄᴀᴜꜱᴇ ᴀꜱ ᴡᴇ ɢᴏ ᴀᴄʀᴏꜱꜱ ᴛʜᴇ ɢʀᴏᴜᴘ, ᴡᴇ ʜᴀᴠᴇ ᴍᴏʀᴇ ᴜɴᴘᴀɪʀᴇᴅ (ꜰʀᴇᴇ) ᴇʟᴇᴄᴛʀᴏɴꜱ.
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