Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas JEE Main2020Chemistrys Block ElementsPractice

Which of the following increases in magnitude as the atomic number of alkli metals increases?

Options

  1. AElectronegativity
  2. BFirst ionisation energy
  3. CIonic radius
  4. DMelting point

Correct answer

C. Ionic radius

Step-by-step solution

→ Ionic   radius Li +   <   Na + <   K + <   Rb + <   Cs + ← Melting   point   /   Ionisation   Energy   /   Electronegativity Li   >   Na   >   K   >   Rb   >   Cs

Practice s Block Elements on Quantrex Academy →

More from s Block Elements

First and second ionization enthalpies of lithium are 520 kJ mol ⁻¹ and 7297 kJ mol ⁻¹ respectively. Energy required to convert 3.5 mg lithium (g) into Li ²⁺ (g) [ Li(g) Li ²⁺ (g) 2026The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is: 2026Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R : Assertion (A) : BeCl 2 and MgCl 2 produce characteristic flame Reason (R) : T 2023Be ( OH ) 2 reacts with Sr ( OH ) 2 to yield an ionic salt. Choose the incorrect option related to this reaction from the following 2023In the given reaction cycle X , Y and Z respectively are 2023The density of alkali metals is in the order 2023Alkali metal from the following with least melting point is 2023Mg NO 3 2 . XH 2 O and Ba NO 3 2 . YH 2 O , represent formula of the crystalline forms of nitrate salts. Sum of X and Y is....... 2023 Full s Block Elements list All NTA Abhyas JEE Main PYQs