Question No:1
The maximum number of elements available in elemental form
[A] 26
[B] 92
[C] 111
[D] 118
Question No:2
Number of short periods in short form of periodic table
[A] 3
[B] 2
[C] 4
[D] 6
Question No:3
Considering the chemical properties, atomic weight of the element ‘Be’ was corrected based on
[A] Valency
[B] Configuration
[C] Density
[D] Atomic volume
Question No:4
The longest and shortest periods are
[A] 1 & 6
[B] 2 & 6
[C] 6 & 1
[D] 1 & 7
Question No:5
The number of elements present in 2nd, 3rd, 4th and 5th periods of modern periodic table respectively are
[A] 2, 8,8 & 18
[B] 8, 8,18 & 32
[C] 8, 8, 18 & 18
[D] 8, 18, 18 & 32
Question No:6
Which of the following pair of elements are from the same group of the periodic table
[A] Mg, Cs
[B] Mg, Sr
[C] Mg, Cl
[D] Na, Cl
Question No:7
Elements of a vertical group have
[A] Same atomic number
[B] Same electronic configuration
[C] Same number of valency electrons
[D] Same number of core electrons
Question No:8
The general electronic configuration of elements of carbon family
[A] ns2 np4
[B] ns2 np3
[C] ns2 np1
[D] ns2 np2
Question No:9
Outer shell ‘octet’ configuration is observed for the elements of the group
[A] 2
[B] 8
[C] 18
[D] 32
Question No:10
The starting element of fifth period is
[A] K
[B] Rb
[C] Kr
[D] Xe
Question No:11
Element with atomic number 15 and mass number 31 is present in
[A] group 5 and period 4
[B] group 5 and period 3
[C] group 15 and period 3
[D] group 15 and period 4
Question No:12
In the periodic table, the elements are arranged in the periods following the
[A] Hund’s rule of maximum multiplicity
[B] Pauli’s exclusion principle
[C] Aufbau principle
[D] Both (1) and (2)
Question No:13
Which of the following pairs of atomic numbers represents elements belonging to the same group?
[A] 11,20
[B] 12,30
[C] 13,31
[D] 14,33
Question No:14
As per the modern periodic law, the physical and chemical properties of elements are periodic function: of their
[A] atomic number
[B] electronic configuration
[C] atomic weight
[D] atomic size
Question No:15
An element with atomic number 20 will be placed in which period of the periodic table?
[A] 4
[B] 3
[C] 2
[D] 1
Question No:16
If the atomic number of an element is 33, it will be placed in the periodic table in the
[A] First group
[B] Third group
[C] Fifth group
[D] Seventh group
Question No:17
The number of periods present in the long form of the periodic table
[A] 6
[B] 7
[C] 8
[D] 18
Question No:18
The electronic configuration of group III elements is
[A] ns2 np3
[B] ns2np5
[C] ns2np1
[D] ns2np2
Question No:19
The total number of gaseous elements are
[A] 8
[B] 9
[C] 10
[D] 11
Question No:20
In a period, elements are arranged in strict sequence of
[A] Decreasing charges in the nucleus
[B] Increasing charges in the nucleus
[C] Constant charges in the nucleus
[D] Equal charges in the nucleus