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41. Which of the following orders of ionic radii is correctly represented? (NTSE West Bengal, Stage-I, 2015-16)
H- > H+> H
Na+ > F- > 0 2-
F- > Na+ > 0 2-
H- > H >H+
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42. What is the electronic configuration of the elements of II group? (NTSE Madhya Pradesh, Stage-I, 2015-16)
1S2, 2S22p2
1s2, 2S22p1
1S2, 2S2 2p6, 3s2
1s2, 2S2 2p6, 3s1
43. Identify the wrong sequence of the element in a group (NTSE Jharkhand, Stage-I, 2016-17)
Ca, Sr, Ba
Cu, Au, Ag
N, P, As
CI, Br, I
44. 14 elements after actinium is called (NTSE Jharkhand, Stage-I, 2016-17)
Lanthanides
Actinides
d-block elements
p-block elements
45. Which of following set of elements is written in order of their increasing metallic character? (NTSE Punjab, Stage-I, 2016-17)
Mg, AI, Si
C, 0, N
Na, Li, K
Be, Mg, Ca
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