The correct boiling point order of $L i, N a, K, R b$ is:

L i > K > N a > R b

No worries! We‘ve got your back. Try BYJU‘S free classes today!

N a > L i > K > R b

No worries! We‘ve got your back. Try BYJU‘S free classes today!

L i > N a > K > R b

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

R b > N a > K > L i

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $L i > N a > K > R b$
The correct boiling point order is $L i (1615 K) > N a (1156 K) > K (1032 K) > R b (961 K)$ .

As the atomic number increases, the van der Waals forces of attraction decreases and the boiling point decreases.

Hence, the correct option is $C$

Suggest Corrections

Similar questions

The correct order of reactivity of alkalimetals towards $H_{2}$ is

N a, L i, R b,

K

The order of decreasing ionisation enthalpy in alkali metals is
(a) Na> Li > K> Rb (b) Rb< Na< K< Li
(c) Li > Na> K> Rb (d) K< Li < Na < Rb

(L i^{\oplus}, N a^{\oplus}, K^{\oplus}, R b^{\oplus})

(L i^{⨁}, N a^{⨁}, K^{⨁}, R b^{⨁})

Join BYJU'S Learning Program