5
Chemistry
Periodic Classification of Elements
372+ practice questions available
Sample Practice Questions
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1
Easy
Newlands' Law of Octaves was found to be applicable only up to the element:
AIron
BCalcium
CZinc
DArgon
2
Easy
All elements of Group 1 have a valency of:
A0
B1
C2
D7
3
Medium
Atomic size decreases across a period because:
ANumber of shells increases
BNuclear charge increases while electrons fill the same shell
CElectrons are lost
DNeutrons increase
4
Easy
The atomic size of Cl is ________ than that of F.
ASmaller
BLarger
CEqual
DCannot be determined
5
Easy
As we move down a group, the metallic character:
AIncreases
BDecreases
CRemains constant
DFirst increases then decreases
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