Question

$(IE{)}_1$ of $Cs$ is $376kJmo{l}^{-1}$ Maximum number of $C{s}^{+}$ ions that can be produced per joule of energy absorbed by a sample of gaseous Cs-atom is

• A. $6.02\times 10^{23}$
• B. $6.01\times 10^{23}$
• C. $1.60\times 10^{18}$
• D. $1.60\times 10^{15}$

Answer 1

Answer: (C)

$376\times 10^{3}J$ of energy absorbed cause ionisation of $N_0$ atoms to $C{s}^{+}$

$1J$ of energy absorbed causes ionisation of

$=\frac{N_0}{376\times 10^3}$ atoms to $C{s}^{+}$

$=\frac{6.02\times 10^{23}}{376\times 10^3}=1.60\times 10^{18}$ atoms to $C{s}^{+}$