Hund's rule states that pairing of electrons in the orbitals belonging to the same subshell ( p , d or f ) does not take place until each orbital belonging to that subshell has got one electron each i.e., it is singly occupied.

The static electric charge on the oil drop is - 3 . 2044 × 10 - 19 C . How many electrons are present on it?

Given, the static electric charge on the oil drop is - 3 . 2044 × 10 - 19 C . The charge on one electron = - 1 .6022 × 10 - 19 C Therefore, number of electrons carrying a charge of - 3 . 2044 × 10 - 19 C = - 3 . 2044 × 10 - 19 C - 1 .6022 × 10 - 19 C = 2 Hence, two electrons are present on the given oil drop.

E M B I B E

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 22

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IMPORTANT

Earn 100

What is aufbau principle?

Important Questions on Atomic Structure

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IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 23

What is Hund's rule?

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IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 24

Explain Heisenberg's uncertainty principle?

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IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 25

What is the wavelength of an electron moving with a velocity of

2.0 \times 10^{7} {ms}^{- 1}

?

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IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 26

An atomic orbital has

n = 2

, what are the possible values of

l

and

m_{l}

?

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IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 27

Which of the following orbitals are possible?

2 s, 1 p, 3 f, 2 p

.

EASY

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IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 28

The static electric charge on the oil drop is

- 3.2044 \times 10^{- 19} C

. How many electrons are present on it?

HARD

11th Telangana Board

IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 29

Arrange the following type of radiation in increasing order of frequency: (a) X-rays (b) visible radiation (c) microwave radiation and (d) radiation from radio waves.

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IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 30

How many electrons in an atom may have