JEE Main 2014 · 19 Apr · Shift 1 · Chemistry Q45

← JEE Main 2014 · 19 Apr · Shift 1

ChemistrySingle correct+4 / -1Question 45 of 90

Amongst LiCl, RbCl, $\ce{BeCl2}$ and $\ce{MgCl2}$ the compounds with the greatest and the least ionic character, respectively are :

LiCl and RbCl

RbCl and

\ce{BeCl2}

\ce{MgCl2}

and

\ce{BeCl2}

RbCl and

\ce{MgCl2}

Answer and worked solution

Official answer: B

Ionic character rises with a larger, less polarising cation. Rb⁺ is the largest and least polarising, so RbCl is the most ionic. Be²⁺ is tiny and highly polarising, so $\ce{BeCl2}$ is the least ionic (essentially covalent).

Topics:Ionic bonding

← Previous question Next question →

JEE Main 2014 · 19 Apr · Shift 1, Chemistry question 45