The lightest gas is

Question

The lightest gas is (A)  N2  (B)  Ar  (C)  Rn  (D) He

Tardigrade Admin · Accepted Answer

Key Idea: The gas with lowest atomic mass is lightest gas. The atomic mass of given choices are as follows textN text2 atomic mass = 14.006 Ar atomic mass = 39.948 Rn atomic mass = 222.0 He atomic mass =4.003 ∴ He is the lightest gas.

Q. The lightest gas is

$N_{2}$

$A r$

$R n$

He

Key Idea: The gas with lowest atomic mass is lightest gas. The atomic mass of given choices are as follows $N_{2}$ atomic mass = 14.006 Ar atomic mass = 39.948 Rn atomic mass = 222.0 He atomic mass =4.003 $∴$ He is the lightest gas.

Q. The lightest gas is

N2​

Ar

Rn

He

Key Idea: The gas with lowest atomic mass is lightest gas. The atomic mass of given choices are as follows N2​ atomic mass = 14.006 Ar atomic mass = 39.948 Rn atomic mass = 222.0 He atomic mass =4.003 ∴ He is the lightest gas.

$N_{2}$

$A r$

$R n$

Key Idea: The gas with lowest atomic mass is lightest gas. The atomic mass of given choices are as follows $N_{2}$ atomic mass = 14.006 Ar atomic mass = 39.948 Rn atomic mass = 222.0 He atomic mass =4.003 $∴$ He is the lightest gas.