Question

In which of the following pairs do the two species resemble each other most closely in chemical properties?

• A. ${}_1^1\text{H}$ and ${}_1^2\text{H}$
• B. ${}_8^{16}\text{O}$ and ${}_8^{16}{\text{O}}^{2-}$
• C. ${}_{12}^{24}\text{Mg}$ and ${}_{12}^{24}{\text{Mg}}^{2+}$
• D. ${}_7^{14}\text{N}$ and ${}_7^{14}{\text{N}}^{3-}$

Answer 1

The correct option is A ${}_1^1\text{H}$ and ${}_1^2\text{H}$

A particular atom or molecule has its chemical properties due to electrons and as ${}_1^1\text{H}$ and ${}_1^2\text{H}$ have same number of electrons so, they are most closely related in chemical properties.