Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 35

HARD

11th CBSE

IMPORTANT

Earn 100

In an atom, the first shell may contain up to $2$ electrons, the second shell contain up to $8$ electrons, the third shell contain up to $18$ electrons and the fourth shell contains up to $32$ electrons. Explain this arrangement in term of quantum numbers.

Important Questions on Structure of Atom

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 36

How do

1 s, 2 s

and

3 s

-orbitals differ from each other ?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 37

Draw probability distribution curves for

1 s

and

2 s

electrons. What observation are made from the graph ?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 38

Draw and discuss the shapes of

d

-orbitals.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 39

Name five

d

-orbitals. Give their shapes.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 40

State and explain 'aufbau principle'.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 41

State Hund's rule and its importance in filling the orbitals in various energy levels ; take atomic number 17 as an example.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 42

State Hund' s rule of maximum multiplicity. How is it used for the distribution of electrons in nitrogen (At. No. 7) and fluorine (At. No. 9) atoms ?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>ADDITIONAL QUESTIONS>Q 43

Why is the electronic configuration of oxygen written as

{ls}^{2} 2 s^{2} 2 p_{x}^{2} 2 p_{y}^{1} 2 p_{z}^{1}

and not as

1 s^{2} 2 s^{2} 2 p_{x}^{2} 2 p_{y}^{2} ?

Name and state the rule governing this type of distribution.