The uncertainty in the position of an electron is 1 x 10 -10 m. The minimum uncertainty in its momentum is about (use delta-x times delta-p >= h/4pi, h = 6.6 x 10 -34 J s):

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The uncertainty in the position of an electron is 1 x 10-10 m. The minimum uncertainty in its momentum is about (use delta-x times delta-p >= h/4pi, h = 6.6 x 10-34 J s):

Answer: 5.3 x 10 -25 kg m s -1.

A 5.3 x 10-24 kg m s-1
B 1.0 x 10-10 kg m s-1
C 6.6 x 10-34 kg m s-1
D 5.3 x 10-25 kg m s-1

Correct answer: D. 5.3 x 10-25 kg m s-1

Explanation: delta-p >= h/(4 pi delta-x) = 6.6 x 10-34 / (4 x 3.14 x 1 x 10-10) = 5.3 x 10-25 kg m s-1.

Bohr's model: electrons occupy fixed circular shells (K, L, M) around the nucleus, with each shell holding up to 2n² electrons.

Concept context

Explore how electrons are arranged inside an atom. Covers Bohr's model, quantum numbers, Heisenberg's uncertainty principle, shapes of s, p, d orbitals, and electronic configuration rules.

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The uncertainty in the position of an electron is 1 x 10<sup>-10</sup> m. The minimum uncertainty in its momentum is about (use delta-x times delta-p >= h/4pi, h = 6.6 x 10<sup>-34</sup> J s):

Concept context

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