Chemistry MCQs for NEET — Practice Questions with Answers

ns²nd^1-10

ns²np⁶nd^1-10

(n-1)d^1-10np⁶

(n-1)d^1-10ns^0-2

the properties of elements are the periodic functions of their atomic number

non-metallic elements are lesser in number that metallic elements

the first ionization energies of elements along a period do not vary in a regular manner with increase in atomic number

for transition elements, the d-sub-shells are filled with electrons monotonically with the increase in atomic number.

Gold

mercury

Scandium

Selenium

an increase from O^2- to F^- and then decrease from Na⁺ to Al³⁺

a decrease from O^2- to F^- and then increase from Na⁺ to Al³⁺

a significant increase from O^2- to Al³⁺

a significant decrease from O^2- to Al³⁺

Na and K

Cu and Al

B and Si

Ca and Mg

a non-metal

krypton

iron

manganese

highest ionization energy

largest atomic radii

highest density

highest electronegativity

Newland

Mendeleev

Lothar Meyer

De-chancourtois

IB group

IA group

IIA group

IIB group 

 ${\mathrm{Cl}}_2{\mathrm{O}}_7>{\mathrm{SO}}_2>{\mathrm{P}}_4{\mathrm{O}}_{10}$

 ${\mathrm{CO}}_2>{\mathrm{N}}_2{\mathrm{O}}_5>{\mathrm{SO}}_3$

 ${\mathrm{Na}}_2\mathrm{O}>\mathrm{MgO}>{\mathrm{Al}}_2{\mathrm{O}}_3$

 ${\mathrm{K}}_2\mathrm{O}>\mathrm{CaO}>\mathrm{MgO}$