Chemistry-Objective Related Question Answers
51. The atom without neutron?
Protium (Isotope of Hydrogen)
52. Atomic number is?
It is the number of protons in the nucleus of an atom
53. Atomic number is denoted by the alphabet?
Z
54. Mass number is?
The total number of protons and neutrons present in the nucleus of an atom
55. Mass number is denoted by alphabet?
A
56. Atomic Theory was propounded by?
John Dalton
57. Uncertainty Principle was propounded by?
Werner Heisenberg
58. Structure of Atom was discovered by?
Niels Bohr
59. Plum Pudding Model was discovered by?
J.J. Thomson
60. Wave Mechanics Model was discovered by?
Max Planck
61. Electron (-ve charge) was discovered by?
J.J. Thomson
62. Proton (+ve charge) was discovered by?
Ernest Rutherford
63. Neutron (No charge) was discovered by?
James Chadwick
64. Nucleus(+ve charge)was discovered by?
Ernest Rutherford
65. Positron (+ve charge) was discovered by?
Carl Anderson
66. Antineutron (No charge) was discovered by?
Bruce Cork
67. The combining capacity of one atom to another?
Valency
68. Atom is bigger than its nucleus?
105 times
69. Electrons move in a circular path called?
Orbit
70. The maximum number of elements in an orbit is?
2
71. The orbit followed by a moving electrons around the nucleus of an atom?
Shell
72. The maximum number of electrons in a shell?
2n^2 (n = Number of shell)
73. Smallest particle of a substance having all its properties?
Molecule
74. The number of molecules obtained in mole of gas is called 1?
Avogadro Number
75. Avagadro Number is?
6.023 x 10^23
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