Hydrogen NDA Questions

NDA Chemistry

Hydrogen MCQ Questions


1.
In its ground state, a hydrogen atom has how many electron(s) in its orbital configuration (1s¹)?
A.
Two
B.
One
C.
Zero
D.
Three
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ANSWER :
B. One
2.
Hydrogen resembles the alkali metals (Group 1) mainly because it has how many valence electron, which it can lose to form a cation?
A.
Two
B.
Eight
C.
One
D.
Seven
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ANSWER :
C. One
3.
Hydrogen resembles the halogens (Group 17) mainly because it needs to gain how many electron to attain a stable noble gas configuration?
A.
Zero
B.
Three
C.
One
D.
Two
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ANSWER :
C. One
4.
Unlike sodium and other alkali metals, hydrogen has an unusually high value of:
A.
Atomic radius
B.
Ionisation enthalpy
C.
Density
D.
Melting point
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ANSWER :
B. Ionisation enthalpy
5.
The ionisation enthalpy of hydrogen is approximately:
A.
520 kJ/mol
B.
150 kJ/mol
C.
1312 kJ/mol
D.
800 kJ/mol
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ANSWER :
C. 1312 kJ/mol
6.
Like halogens, hydrogen can gain an electron to form a negatively charged ion called the:
A.
Deuteride ion
B.
Hydronium ion (H3O⁺)
C.
Protide ion
D.
Hydride ion (H⁻)
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ANSWER :
D. Hydride ion (H⁻)