Question

Write down the characteristics of the elements having an atomic number $17$.

Answer 1

Characteristics of the elements having an atomic no. $17⟶Chlorine\left(Cl\right)$

$⟶$ Electronic configuration of $Cl:1s^{2}2s^{2}2p^{6}3s^{2}3p^5$

$⟶$ It belongs to ${17}^{th}$ group and $3^{rd}$ period.

$⟶$ It has highest $e^{-}$ affinity in its' group.

$⟶$ It is a toxic green colored gas.

$⟶$ It is avery poisonous gas, even a low concentration of it in the air can be fatal.

$⟶$ It does not burn in normal state, but when temperature is increased, it reacts with hydrogen which can cause explosion and release phosgene gas.