Atomic Number(Z), Mass number(A), Isotopes and Isobars - Practice Questions & MCQ

O (Oxygen atom)

 $F^{-}$ (Fluoride ion)

F (Fluoride atom)

$\mathrm{Na}^{+}$  (Sodium ion)

$M g$ 

Na

Ca

V

${ }_6^{13} \mathrm{C},{ }_7^{13} \mathrm{~N}$

${ }_7^{13} \mathrm{~N},{ }_8^{15} \mathrm{O}$

${ }_7^{14} \mathrm{~N},{ }_8^{15} \mathrm{O}$

${ }_6^{13} \mathrm{C},{ }_7^{14} \mathrm{~N}$

$6^{c^{12}}, 6^{C^{13}}$

$6^{C^{13}}, 7^{N^{14}}$

$6^{C^{14}}, 7^{N^{14}}$

$\mathrm{O}^{2-}, \mathrm{Na}^{+}$

$7^{N^{14}}, 6^{c^{13}}, 5^{B^{11}}$

$6^{c^{13}}, 6^{c^{14}}$

$1^{H^3}, 2^{H e^4}$

Both A and C

i and ii

ii and iii

iii and iv

i and iv 

Some mass numbers but different atomic number

Some atomic number but different mass number

Some atomic number and mass number

Different atomic number and mass number

$NO^{+}$

$N_{2}$

$SnCl_{2}$

$NO{_{2}}^{-}$

Proton

Electron

Neutron

$\alpha$-particle

${ }_6^{12} \mathrm{C}_{, 12}^{24} \mathrm{Mg}$

${ }_{11}^{23} \mathrm{Na},{ }_9^{19} \mathrm{~F}$

${ }_{11}^{23} \mathrm{Na},{ }_{12}^{24} \mathrm{Mg}$

${ }_{11}^{23} \mathrm{Na}_{19}^{39} \mathrm{~K}$