Modern Periodic Law and Present Form of the Periodic Table (s, p. d and f block elements,...) NEET Questions

Inorganic Chemistry - Classification of Elements and Periodicity in Properties

Modern Periodic Law and Present Form of the Periodic Table (s, p. d and f block elements,...) MCQ Questions


13.
Which of the following is NOT a property of transition elements?
A.
They are predominantly non-metals
B.
They form coloured ions
C.
They show variable oxidation states
D.
They are good catalysts
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ANSWER :
A. They are predominantly non-metals
14.
Which of the following d-block elements does NOT show typical transition element properties?
A.
Fe
B.
Mn
C.
Zn
D.
Cr
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ANSWER :
C. Zn
15.
The 3d-transition series starts from which element?
A.
Vanadium (Z=23)
B.
Scandium (Z=21)
C.
Calcium (Z=20)
D.
Titanium (Z=22)
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ANSWER :
B. Scandium (Z=21)
16.
Why are d-block elements called 'Transition Elements'?
A.
They are radioactive
B.
They form a bridge between chemically active s-block metals and less active p-block elements
C.
They show transition in colour
D.
They transition from solid to liquid easily
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ANSWER :
B. They form a bridge between chemically active s-block metals and less active p-block elements
17.
The element with electronic configuration [Ar]3d⁵4s¹ is:
A.
Manganese
B.
Chromium
C.
Iron
D.
Vanadium
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ANSWER :
B. Chromium
18.
The general outer electronic configuration of f-block elements is:
A.
(n-1)d¹⁻¹⁰ns⁰⁻²
B.
ns¹⁻²
C.
ns²np¹⁻⁶
D.
(n-2)f¹⁻¹⁴(n-1)d⁰⁻¹ns²
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ANSWER :
D. (n-2)f¹⁻¹⁴(n-1)d⁰⁻¹ns²