IIT-JEE 1998 | Structure of Atom Question 46 | Chemistry

IIT-JEE 1998

MCQ (Single Correct Answer)

-0.5

ASSERTION:
Nuclide $${}_{13}^{30}Al$$ is less stable than $${}_{20}^{40}Ca$$

REASON:
Nuclides having odd number of protons and neutrons are generally unstable.

If both assertion and reason are correct, and reason is the correct explanation of the assertion.

If both assertion and reason are correct, and reason is not the correct explanation of the assertion.

If assertion is correct but reason is incorrect.

If assertion is incorrect but reason is correct.

IIT-JEE 1997

MCQ (Single Correct Answer)

-0.25

For a d-electron the orbital angular momentum is

$$\sqrt 6 \left( {h/2\pi } \right)$$

$$\sqrt 2 \left( {h/2\pi } \right)$$

$$ \left( {h/2\pi } \right)$$

$$2 \left( {h/2\pi } \right)$$

IIT-JEE 1996

MCQ (Single Correct Answer)

-0.25

The orbital angular momentum of an electron in 2s orbital is

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

Zero

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

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

IIT-JEE 1995 Screening

MCQ (Single Correct Answer)

-0.25

A 3p orbital has

two non spherical nodes

two spherical nodes

one spherical and one non spherical node

one spherical and two non spherical nodes

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