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Unknown Element

APCHEM-ZIKXEO

An element $M$ can exist as both $MCl_2$ and $MCl_4$ . When 10.00 g of $MCl_2$ is reacted with excess chlorine, 15.0 g of $MCl_4$ is produced.

What is the identity of the unknown element $M$?

A

$Ga$

B

$B$

C

$Pb$

D

$V$