The energy required to remove an electron from the outermost orbit or shell of a neutral gaseous atom is
A) atomic size
B) ionization energy
C) electron gain enthalpy
D) oxidation potential
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Calculate the frequency of revolution of an electron in the first orbit of an aluminum atom. Given that mass of electron `=9x10^(-31) kg, e= 1.6 xx10^
Correct Answer - `3.25xx10^(18) rev.//sec`
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The minimum kinetic energy of a ground state hydrogen atom required to have head-on collision with another ground state hydrogen atom but at rest to p
Correct Answer - 20.4 eV
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A shell of mass 0.020 kg is fired by a gun of mass 100 kg. If the muzzle speed of the shell is 80 m s^-1, what is the recoil speed of the gun?
Given: m1 = 0.02 kg, m2 = 100 kg, v1 = 80 m s-1 To find: Recoil speed (v2) Formula: m1u1 + m2u2 = m1v1 + m2v2 Calculation: Initially gun and shell are at rest. ∴ m1u1 + m2u2 = 0 Final momentum =...
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When an electron jumps from higher orbit to lower orbit in an atom the energy is …………….
Correct option is B) emitted
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The quantum number which explains about size and energy of the orbit or shell is ……………
Correct option is A) n
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l = 0 — i) d – sub shell , 1 = 1 — ii) s – sub shell , 7 = 2 — iii) f – sub shell
C) a → ii, b → iv, c → i, d → iii
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The distance from the centre of the nucleus of the atom to its outermost shell is
C) Atomic radius
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The energy of electron in the nth Bohr orbit of H-atom is …………
Option : (C) \(-\frac{2.18\times 10^{-18}}{n^2}J\)
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A neutral metal atom becomes dipositive ion by loosing two”electrons. In the same way a neutral non-metal atom becomes
Correct option is D) m2 x2
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Fluorine atom contains seven electrons in outermost shell, but its valency is ‘1’. Predict the reason.
B) It can loss only one electron from the valency shell.
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