Uncertainty in the position of an electron (mass = 9.1 × 10–31 kg) moving with a velocity 300 ms–1, accurate upto 0.001%, will be
(h = 6.63 × 10–34 Js)
19.2 × 10–2 m
5.76 × 10–2 m
1.92 × 10–2 m
3.84 × 10–2 m
Additional Questions
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In a multi–electron atom, which of the following orbitals described by the three quantum numbers will have the same energy in the absence of magnetic acid and electric fields? |
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The energy of an electron in first Bohr orbit of H-atom is –13.6 eV. The possible energy value of electron in the excited state of Li2+ is |
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Which of the following statements in relation to the hydrogen atom is correct? |
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α-particles, β-particles and γ-rays are all having same energy. Their penetrating power in a given medium in increasing order will be |
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How many 'd' electrons are present in Cr2+ ion? |
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Which of the following is not permissible? |
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An electron in hydrogen atom makes a transition n1 → n2 where n1 and n2 are principal quantum numbers of the two states. Assuming Bohr's model to be valid, the time period of the electron in the initial state is eight times that in the final state. The possible values of n1 and n2 are |
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The electronic transitions from n = 2 to n = 1 will produce shortest wavelength in (where n = principal quantum state) |
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Which of the following pair of ions have same paramagnetic moment? |
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Which of the following sets of quantum numbers represents the highest energy of an atom? |
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