1
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

With reference to Pauling's Electronegativity scale, which one of the following options shows the correct order of electronegativity values of elements?

A
$$\mathrm{Na}>\mathrm{Cs}>\mathrm{K}$$
B
$$\mathrm{Mg}>\mathrm{Al}>\mathrm{Si}$$
C
$$\mathrm{B}>\mathrm{C}>\mathrm{Al}$$
D
$$\mathrm{N}>\mathrm{S}>\mathrm{P}$$
2
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

The correct decreasing order of negative electron gain enthalpy for $$\mathrm{C}, \mathrm{Ca}, \mathrm{Al}, \mathrm{F}$$ and $$\mathrm{O}$$ is

A
$$\mathrm{F}>\mathrm{O}>\mathrm{C}>\mathrm{Al}>\mathrm{Ca}$$
B
$$\mathrm{Ca}>\mathrm{Al}>\mathrm{O}>\mathrm{F}>\mathrm{C}$$
C
$$\mathrm{Al}>\mathrm{F}>\mathrm{Ca}>\mathrm{C}>\mathrm{O}$$
D
$$\mathrm{F}>\mathrm{C}>\mathrm{O}>\mathrm{Ca}>\mathrm{Al}$$
3
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The group number of the element in the periodic table with the electronic configuration $$(\mathrm{n}-1) \mathrm{d}^2 \mathrm{~ns}^2$$. For $$n=4$$ is:

A
4
B
13
C
3
D
5
4
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

The increasing order of atomic radii of the following group 13 elements is

A
Al < Ga < In < Tl
B
Ga < Al < In < Tl
C
Al < In < Tl < Ga
D
Al < Ga < Tl < In
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