Question

Fluorine (F), Chlorine (Cl), Bromine (Br) and other halogens (X) are placed together in the same group because all these elements can form uni-negative ions $(F^{-},C{l}^{-},B{r}^{-},X^{-})$ called halides. Identify the element that can form such uninegative ion and can be placed in the same group along with halogens.

• A. Nitrogen (N)
• B. Oxygen (O)
• C. Hydrogen (H)
• D. Carbon (C)

Answer 1

The correct option is C Hydrogen (H)

The element Hydrogen also resembles Halogens as it can form Hydrides meaning, it can form $H^{-}$ ions in NaH, LiH, etc. Halogens can form such halide ions $(F^{-},C{l}^{-},B{r}^{-},etc.)$ in NaF, NaCl, KBr, etc. So, hydrogen can also be placed in ${17}^{th}$ group along with F, Cl, Br, I, etc. as it exhibits similar properties.