Why is Chlorine a different background color than the rest of the reactive nonmetals? And why is Mercury's name highlighted in pink while none of the other names are highlighted? --RedLightningStrike (talk) 13:45, 9 December 2018 (UTC)
Why is Chlorine a different background color than the rest of the reactive nonmetals? And why is Mercury's name highlighted in pink while none of the other names are highlighted? --RedLightningStrike (talk) 13:45, 9 December 2018 (UTC)Reply
