EASY
10th CBSE
IMPORTANT
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The number of electrons in the valence shell of the atom of an element indicates the to which element belongs.
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Important Questions on Periodic Classification of Elements
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10th CBSE
IMPORTANT
Vertical columns of elements in the periodic table are called _____.
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10th CBSE
IMPORTANT
The elements of group are known as _____.
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10th CBSE
IMPORTANT
The first period contains _____ elements.
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10th CBSE
IMPORTANT
Moseley classified elements according to their _____. (atomic number/atomic mass)
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10th CBSE
IMPORTANT
Elements in the same group have similar _____.
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10th CBSE
IMPORTANT
Halogens belong to group _____.
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10th CBSE
IMPORTANT
Mendeleev’s periodic table is based on atomic _____. (number / mass)
EASY
10th CBSE
IMPORTANT
The valency of elements in group is _____.
