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Subjects
Science CBSE
Class 10
Periodic classification of elements
Textbook questions
29.
NCERT Exemplar III
Exercise condition:
4
m.
Multiple Choice Questions:
1.
The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belong to the same group?
A and C
D and A
B and D
A and B
2.
Which among the following elements has the largest atomic radii?
O
Mg
Na
K
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