AIEEE 2003 | Structure of Atom Question 171 | Chemistry

The orbital angular momentum for an electron revolving in an orbit is given by $$\sqrt {l(l + 1)} {h \over {2\pi }}$$. This momentum for an s-electron will be given by

zero

$${h \over {2\pi }}$$

$$\sqrt 2 {h \over {2\pi }}$$

$$ + {1 \over 2}{h \over {2\pi }}$$

AIEEE 2002

MCQ (Single Correct Answer)

-1

In a hydrogen atom, if energy of an electron in ground state is -13.6 eV, then that in the 2^nd excited state is

-1.51 eV

-3.4 eV

-6.04 eV

-13.6 eV

AIEEE 2002

MCQ (Single Correct Answer)

-1

Uncertainty in position of a minute particle of mass 25 g in space is 10^-5 m. What is the uncertainty in its velocity (in ms^-1) (h = 6.6 $$\times$$ 10^-34 Js)

2.4 $$\times$$ 10^-34

0.5 $$\times$$ 10^-34

2.1 $$\times$$ 10^-28

0.5 $$\times$$ 10^-23

Questions Asked from Structure of Atom (MCQ (Single Correct Answer))

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