1.

a metal salt MX exposed to light split up to form metal m and gas x2 metal M is used in making ornament where as x2 is used in making bleeching powder

Answer»

The metal is SILVER Ag
the gas is chlorine Cl
the metal salt is silver CHLORIDE AgCl
when this salt is exposed to light decomposition REACTION takes place.
eq
AgCl. - Ag + Cl2



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