Structure of Atom Test

Directions For Questions

The sequence of filling electrons in sub-shells of elements with few exceptions in d block and f-block elements is governed by the Aufbau principle followed by Hund's rule and Pauli's exclusion principle.
a. The electron prefers to enter into sub-shells with lower (n+ l) value. The energy for a sub-shell of an element other than hydrogen is proportional to the sum of principal quantum number(n) and angular momentum quantum number.
b. If (n + l) value is the same for many sub-shells, the priority of electron filling is given to the sub-shell with lowest n value.
c. Fulfilled sub-shell is more stable less than half-filled.

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Structure of At...

Question 1

Isotope

Isobar

Isotone

Isoelectron

Question 2

s-

p-

d-

f-

Question 3

Same number of electrons and protons but different number of neutrons

Same number of electrons but different number of protons

Same number of neutrons but different number of electrons

None of the above

Question 4

1s, 2s

2s, 2p

3d, 4p

5p, 4s

Question 5

$$1s< 2s< 2p< 3d< 4s< 4p$$

$$1s< 2s< 2p< 4s< 3d< 4p$$

$$1s< 2s< 4s< 2p< 4p< 3d$$

$$1s< 2s< 3d< 4s< 2p< 4p$$

Question 6

10$$^{-12}$$ cm

10$$^{-14}$$ cm

10$$^{-10}$$ cm

10$$^{-8}$$ cm

Question 7

Atomic mass

Atomic number

Atomic volume

Atomic radius

Question 8

A and C are isotopes; B and C are isobars

A and B are isotopes; A and C are isobars

B and C are isobars; A and B are isotopes

A and C are isotopes; A and B are isobars

Question 9

electrons and protons

electrons and neutrons

neutrons and protons

electrons, neutrons and protons

Question 10

metallic

non-metallic

metalloid

None of these

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