1
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
The outer electronic configuration of Gd (At. No. 64) is
A
4f5 5d4 6s1
B
4f7 5d1 6s2
C
4f3 5d5 6s2
D
4f4 5d5 6s1
2
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
According to law of photochemical equivalence the energy absorbed (in ergs/mole) is given as (h = 6.62 $$ \times $$ 10$$-$$27 ergs, c = 3 $$ \times $$ 1010 cm s$$-$$1, NA = 6.02 $$ \times $$ 10$$-$$23 mol$$-$$1)
A
$${{1.196 \times {{10}^8}} \over \lambda }$$
B
$${{2.859 \times {{10}^5}} \over \lambda }$$
C
$${{2.859 \times {{10}^{16}}} \over \lambda }$$
D
$${{1.196 \times {{10}^{16}}} \over \lambda }$$
3
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
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
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
The pair of species that has the same bond order in the following is
A
CO, NO+
B
NO$$-$$, CN$$-$$
C
O2, N2
D
O2, B2
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