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

The pair of amphoteric hydroxides is

$MgO$ is used as a refractory material because

Pure anhydrous $MgCl_2$ can be prepared from the hydrated salt by

The correct sequence of increasing melting points of $BeCl_2$,$MgCl_2$,$CaCl_2$,$SrCl_2$,and $BaCl_2$ is:

Assertion $(A)$: $Be$ and $Mg$ do not impart any colour to the flame.
Reason $(R)$: The electrons in them are too strongly bound to get excited by the energy of the flame.
The correct option among the following is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module