Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Which among the following is correct for all the alkali metals?Option: 1 They readily react with halogens to form ionic halides, <img alt="\math

Which among the following is correct for all the alkali metals?

Option: 1

They readily react with halogens to form ionic halides, \mathrm{M^{+}X^{-}}


Option: 2

They react with water to form hydroxide and hydrogen

 


Option: 3

Their chlorides are deliquescent and crystallise as hydrates

 


Option: 4

Their nitrates decompose into nitrites and oxygen on heating


Answers (1)

best_answer

Halides of Li are covalent in nature due to its small size and high polarizing power.

All alkali metal will react with water to form hydroxides and liberate hydrogen.

2 \mathrm{M}+2 \mathrm{H}_2 \mathrm{O} \rightarrow 2 \mathrm{M}^{+}+2 \mathrm{OH}^{-}+\mathrm{H}_2 \text {, where } \mathrm{M}=\text { an alkali metal }

Among the chlorides of alkali metals, only LiCl is deliquescent (tend to absorb moisture) and crystallises as a hydrate \mathrm{LiCl} \cdot 2 \mathrm{H}_2 \mathrm{O}.

Nitrates of all alkali metals decompose into oxides on heating.

4 \mathrm{MNO}_3(\mathrm{~s}) \longrightarrow 2 \mathrm{M}_2 \mathrm{O}(\mathrm{s})+4 \mathrm{NO}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \text {, where } \mathrm{M}=\text { an alkali metal }

Posted by

Gautam harsolia

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

UP NEET UG Counselling 2025: BDS fee structure out for non-minority private dental colleges
anam-khan

NEET admissions, exit tests, registration: NCAHP chief on allied and healthcare sciences’ future
anam-khan

KEA extends Karnataka NEET UG 2025 registration deadline to July 17 for MBBS, BDS, AYUSH admissions

Latest Question