Periodic Properties

Which presents the correct sequence of the increasing basic nature

Which one of the following orders presents the correct sequence of the increasing basic nature of the given oxides?

MgO < K₂O < Al₂O₃ < Na₂O
K₂O < Na₂O < Al₂O₃ < MgO
Na₂O < K₂O < MgO < Al₂O₃
Al₂O₃ < MgO < Na₂O < K₂O

According to the periodic law of elements, the variation in properties

According to the periodic law of elements, the variation in properties of elements is related to their

atomic masses
atomic numbers
nuclear masses
nuclear neutron-proton number ratios

The set representing the correct order of ionic radius is

The set representing the correct order of ionic radius is

Li⁺ > Na⁺ > Mg²⁺ > Be²⁺
Na⁺ > Li⁺ > Mg²⁺ > Be²⁺
Li⁺ > Be²⁺ > Na⁺ > Mg²⁺
Mg²⁺ > Be²⁺ > Li⁺ > Na⁺

The ionic radii (in Å) of N3–, O2– and F– are respectively

The ionic radii (in Å) of N^3–, O^2– and F^– are respectively

1.36, 1.71 and 1.40
1.71, 1.40 and 1.36
1.71, 1.36 and 1.40
1.36, 1.40 and 1.71

Which one of the following ions has the highest value of ionic radius

Which one of the following ions has the highest value of ionic radius?

Li⁺
F^–
O^2–
B³⁺

The increasing order of the first ionisation enthalpies of the elements B, P, S and F

The increasing order of the first ionisation enthalpies of the elements B, P, S and F (lowest first) is

B < P < S < F
F < S < P < B
P < S < B < F
B < S < P < F