$=\frac{0.57}{100} \times 22700$
$=129.39$
weight of $Cl =129.39 \times 0.55$
$=71.1645$
$\therefore$ Mole of $Cl =\frac{71.1645}{35.5} \cong 2$
Hence $MCl _2$
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$(A)$ Emit or absorb energy in the form of electromagnetic radiation
$(B)$ Frequency distribution of the emitted radiation depends on temperature
$(C)$ At a given temperature, intensity vs frequency curve passes through a maximum value
$(D)$ The maximum of the intensity vs frequency curve is at a higher frequency at higher temperature compared to that at lower temperature