AIPMT 2009 | Structure of Atom Question 41 | Chemistry

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AIPMT 2009

MCQ (Single Correct Answer)

-1

Which of the following is not permissible arrangement of electrons in an atom ?

n = 5, $$l$$ = 3, m = 0, s = +1/2

n = 3, $$l$$ = 2, m = $$-$$ 3, s = $$-$$1/2

n = 3, $$l$$ = 2, m = $$-$$ 2, s = $$-$$1/2

n = 4, $$l$$ = 0, m = 0, s = $$-$$1/2

AIPMT 2009

MCQ (Single Correct Answer)

-1

Maximum number of electrons in a subshell of an atom is determined by the following

2$$l$$ + 1

4$$l$$ $$-$$ 2

2n²

4$$l$$ + 2

AIPMT 2008

MCQ (Single Correct Answer)

-1

If uncertainty in position and momentum are equal, then uncertainty in velocity is

$${1 \over m}\sqrt {{h \over \pi }} $$

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

$${1 \over {2m}}\sqrt {{h \over \pi }} $$

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

AIPMT 2008

MCQ (Single Correct Answer)

-1

The measurement of the electron position is associated with an uncertainty in momentum, which is equal to 1 $$ \times $$ 10^$$-$$18 g cm s^$$-$$1. The uncertainty in electron velocity is (mass of an electron is 9 $$ \times $$ 10^$$-$$28 g)

1 $$ \times $$ 10⁵ cm s^$$-$$1

1 $$ \times $$ 10¹¹ cm s^$$-$$1

1 $$ \times $$ 10⁹ cm s^$$-$$1

1 $$ \times $$ 10⁶ cm s^$$-$$1

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