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1
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
The species Ar, K+ and Ca2+ contain the same number of electrons. In which order do their radii increase ?
A
Ca2+ < K+ < Ar
B
K+ < Ar < Ca2+
C
Ar < K+ < Ca2+
D
Ca2+ < Ar < K+
2
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Which of the following orders of ionic radii is correctly represented ?
A
H$$-$$ > H$$^ \bullet $$ > H+
B
Na+ > F$$-$$ > O2$$-$$
C
F$$-$$ > O2$$-$$ > Na+
D
A$$l$$3+ > Mg2+ > N3$$-$$
3
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for C, Ca, Al, F and O?
A
A$$l$$ < Ca < O < C < F
B
A$$l$$ < O < C < Ca < F
C
C < F < O < A$$l$$ < Ca
D
Ca < A$$l$$ < C < O < F
4
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Identify the wrong statement in the following.
A
Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius.
B
Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius.
C
Atomic radius of the elements increases as one moves down the first group of the periodic table.
D
Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the periodic table.
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