Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Classification of Elements and Periodicity in Properties

NTA Abhyas 2020 · Chemistry · Classification of Elements and Periodicity in Properties

Increasing order of density is

Increasing order of density is

Options

  1. ALi<K<Na<Rb<CsLi < K < Na < Rb < Cs
  2. BLi<Na<K<Rb<CsLi < Na < K < Rb < Cs
  3. CLi<Na<K<Cs<RbLi < Na < K < Cs < Rb
  4. DK<Li<Na<Rb<CsK < Li < Na < Rb < Cs

Correct answer

A. Li<K<Na<Rb<CsLi < K < Na < Rb < Cs

Step-by-step solution

As per Lother-Meyer's curve, the atomic volume of CsCs is maximum among s-block elements. But atomic masses increases more rapidly than atomic volume, hence density increases along the group
Practice Classification of Elements and Periodicity in Properties on Quantrex Academy →

More from Classification of Elements and Periodicity in Properties

The correct statement(s) regarding the periodic properties of elements is(are) JEE Advanced 2026Match List-I with List-II. List-I Electronic configuration of neutral atom (where n=2 )… JEE Main 2026In a period, the first ionisation enthalpy of the element at extreme left and the… JEE Main 2026Given below are two statements: Statement I: Aluminium is more electropositive than… JEE Main 2026Given below are two statements : Statement I: The number of pairs among [Al_2O_3… JEE Main 2026Given below are two statements: Statement I: The correct order of electronegativity of… JEE Main 2026The 1^ st ionization enthalpy for Mg is +737 kJ/mol. The most probable estimated value of… JEE Main 2026The electronegativity of a group 13 element 'E' is same as that of Ge (on Pauling scale… JEE Main 2026 Full Classification of Elements and Periodicity in Properties list All NTA Abhyas JEE Main PYQs