Question

A metal M (specific heat $0.16$) forms a metal chloride with $\approx 65\%$ chlorine present in it. The formula of the metal chloride will be _______.

• A. MCl
• B. $MC{l}_2$
• C. $MC{l}_3$
• D. $MC{l}_4$

Answer 1

The correct option is B $MC{l}_2$

Let metal chloride in $MC{l}_x$ then,

$\frac{6.4}{SpecificHeat}=$ Atomic weight

$\frac{6.4}{0.16}=$ Atomic weight

Atomic weight $=40$

According to question

$\frac{x\times 35.5}{40+x\times 35.5}=0.65$

$\Rightarrow x\approx 2$

So, $MC{l}_x=MC{l}_2$.

Hence, the correct option is $\text{B}$