Periodic classification of elements Worksheet-1
A. Atomic weight B. Atomic number
C. Number of neutrons D. None of these
A. U B. Ra C. Pb D. Hg
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Periodic classification of elements Worksheet-2
A. Atomic number
B. Electronic configuration
C. Atomic weight
D. Number of electrons in the outermost shell or valence electrons
A. 1 and 7 groups B. 2 and 6 groups
Read More...Periodic classification of elements Worksheet-3
A. Sodium atom is larger in size than Potassium atom
B. Sodium atom is larger in size than Lithium atom
C. Chlorine atom is larger in size than Sodium atom
D. Aluminium atom is larger in size then a sodium atom
A. The valency of element is 7
B. The element exists as a diatomic molecule
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