Question

The distance between the centres of carbon and oxygen atoms in the carbon monoxide molecule is 1.12 Å. The distance of centre of mass from the oxygen atom is

• A. 0.48 Å
• B. 0.56 Å
• C. 0.64 Å
• D. 0.75 Å

Answer 1

The correct option is A. 0.48 Å.

Mass of Carbon = 12

Mass of Oxygen = 16

$\therefore m_1{d}_1=m_2{d}_2$

($m_o$) (x) = ($m_c$) (1.12 - x)

28x = 13.44

$\Rightarrow$ x = 0.48 Å.