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10th CBSE
IMPORTANT
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Which of the following elements has the smallest atomic radius?
(a)nickel
(b)cobalt
(c)calcium
(d)potassium

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Important Questions on Periodic Classification of Elements
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10th CBSE
IMPORTANT
Which element in Group 15 has the strongest metallic character?

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10th CBSE
IMPORTANT
Which halogens are gases at STP?

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10th CBSE
IMPORTANT
When combining with non-metallic atoms, metallic atoms generally will

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10th CBSE
IMPORTANT
Which set of elements contains a metalloid?

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10th CBSE
IMPORTANT
Atoms of elements in a group on the Periodic Table have similar chemical properties. This similarity is most closely related to the atoms

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10th CBSE
IMPORTANT
As atoms of elements in Group are considered in order from top to bottom, the electronegativity of each successive element

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10th CBSE
IMPORTANT
The first ionisation energy of an element is per mole of atoms. An atom of this element in the ground state has a total of how many valence electrons?

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10th CBSE
IMPORTANT
An atom of which of the following elements has the greatest ability to attract electrons?
