Which one of the following pairs does not imp | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) When alkaline earth metals or their salts are heated,electrons are excited to higher energy levels due to the absorption of energy.When these elec

Vedclass · Accepted Answer

$BeCl_2$ and $MgCl_2$

Vedclass · Answer

(C) When alkaline earth metals or their salts are heated,electrons are excited to higher energy levels due to the absorption of energy.When these electrons return to their ground states,they emit energy in the form of visible light,imparting a characteristic colour to the flame.$Be$ and $Mg$ atoms have very small sizes and high ionization enthalpies,meaning their electrons are too strongly bound to be excited by the energy of a Bunsen flame.Therefore,$Be$ and $Mg$ do not impart any colour to the flame.$Ca$,$Sr$,and $Ba$ impart brick red,crimson (blood red),and apple green colours,respectively.Thus,the pair that does not impart colour is $BeCl_2$ and $MgCl_2$.

Which one of the following pairs does not impart colour to the flame?

Similar Questions

Plaster of Paris is used:

Beryllium resembles much with

Which of the following produces hydrolith with dihydrogen?

Chlorides of which metal are soluble in organic solvents:

Chemical $A$ is used for water softening to remove temporary hardness. $A$ reacts with $Na_2CO_3$ to generate caustic soda. When $CO_2$ is bubbled through $A$,it turns cloudy. What is the chemical formula of $A$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module