IIT-JEE 1999 | Structure of Atom Question 37 | Chemistry

IIT-JEE 1999

MCQ (Single Correct Answer)

-0.5

The electrons, identified by quantum numbers n and l, (i) n = 4, l = 1, (ii) n = 4, l = 0, (iii) n = 3, l = 2 and (iv) n = 3, l = 1 can be placed in order of increasing energy, from the lowest to highest, as

(iv)<(ii)<(iii)<(i)

(ii)<(iv)<(i)<(iii)

(i)<(iii)<(ii)<(iv)

(iii)<(i)<(iv)<(ii)

IIT-JEE 1998

MCQ (Single Correct Answer)

-0.25

The orbital diagram in which the Aufbau principle is violated is

IIT-JEE 1998 Chemistry - Structure of Atom Question 48 English Option 1

IIT-JEE 1998 Chemistry - Structure of Atom Question 48 English Option 2

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

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

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

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

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

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