Ratio of the radii of the nuclei with mass numbers 8 and 27 would be
Ratio of the radii of the nuclei with mass numbers 8 and 27 would be
Options
(a) 27 / 8 (b) 8 / 27 (c) 2 / 3 (d) 3 / 2
Correct […]
Atoms and Nuclei
The innermost orbit of hydrogen atom has a diameter 1.06Å. The diameter of tenth
The innermost orbit of hydrogen atom has a diameter 1.06Å. The diameter of tenth orbit is
Options
(a) 5.3 Å (b) 10.6 Å (c) 53 Å (d) 106 Å
Correct Answer:
106 Å
Radius of first orbit of the electron in a hydrogen atom is 0.53 Å. So the radius
Radius of first orbit of the electron in a hydrogen atom is 0.53 Å. So the radius of the third orbit will be
Options
(a) 1.12 Å (b) 4.77 Å (c) 1.06 Å […]
The total energy of an electron in the first excited state of hydrogen atom
The total energy of an electron in the first excited state of hydrogen atom is about -3.4 eV. Its kinetic energy in this state is
Options
(a) 3.4 eV (b) 6.8 eV (c) -3.4 […]
If a star converts all helium in its core to oxygen, then energy released per oxygen
If a star converts all helium in its core to oxygen, then energy released per oxygen nuclei is(Mass of He=4.0026 amu, Mass of O=15.99994 amu)
Options
(a) 10.24 Mev (b) 0 (c) 7.56 […]
The radius of a nucleus of mass number A is directly proportional to
The radius of a nucleus of mass number A is directly proportional to
Options
(a) A³ (b) A (c) A²/³ (d) A¹/³
Correct Answer:
A¹/³
Explanation:
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