Electron Distribution in Different Orbits

Q.

Sulphur has an atomic number 16 and a mass of 32.

State the number of protons and neutrons in the nucleus of sulphur. Give a simple diagram to show the arrangement of electrons in an atom of sulphur.

Q.

What are the rules that must be followed to write the electronic configuration of elements?

Q.

State and explain the Aufbau principle. Write electronic configuration of $\mathrm{C},\mathrm{Cr},\mathrm{Fe},\mathrm{Cu}$.

Q.

The maximum number of electrons that can be filled in the shells K, L, M and N respectively are:

1. 2, 8, 16, 32

2. 2, 8, 18, 32

3. 2, 8, 8, 16

4. 2, 8, 8, 32

Q.

What is the electronic configuration of Nickel?

Q. What are isoelectronic

Q.

What is the maximum number of electrons an M shell of the atom can accomodate?

Q. Definition of acid and basic radicals.

Q.

What are the electron configurations of carbon, hydrogen, and oxygen atoms?

Q.

How do you draw the lewis structure for ${\mathrm{NO}}_2$?

Q.

Why do electrons enter the $4s$ orbital before entering the $3d$ orbital?

Q.

How do you write the electron configuration of Tin?

Q.

The correct order of electron affinity is

1. Be < B < C < N

2. N < Be < C < B

3. N < Be < C < B

4. N < C < B < Be

Q.

The electron configuration for $\mathrm{Cu}$is $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{6}4{\mathrm{s}}^{1}3{\mathrm{d}}^{10}$. How many valence electrons does Copper contain?

Q.

Which of the following is the correct electronic configuration of sodium?

1. 2, 8, 1

2. 8, 2, 1
   

3. 2, 1, 8
   

4. 2, 8, 2

Q.

If the K and L shells of an atom are full, then what would be the total number of electrons in the atom?

Q. Why phousphous shows 3 and 5 valence?

Q.

What is the electron configuration of ${\mathrm{Ti}}^{2+}$?

Q.

What is the electronic configuration of a hydrogen atom?

Q.

State 3 difference between atoms and molecules

Q. What is an OCTET ? How do elements are in OCTET ?

Q. Write the chemical formula of aluminium sulphate.

Q.

The energy shell associated with lowest energy is :

1. K

2. L

3. M

4. N

Q.

What is the valency of alluminium in ${\mathrm{Al}}_2{\mathrm{O}}_3$

Q. What are the $n,l,m,s$ values for 2p orbital?

1. 
   $2,1,0,+½$
2. 
   $2,2,0,+½$
3. 
   $2,2,-1,+½$
4. 
   $2,1,-1,-½$

Q.

What is the maximum number of electrons which can be accommodated in the L shell of an atom?

Q.

The correct electronic configuration of a chloride ion is:

1. 2, 8, 4
   

2. 2, 8, 8
   

3. 2, 8

4. 2, 8, 7

Q.

What is the maximum number of electrons present in the L shell ?

1. 2

2. 8

3. 18

4. 32

Q. Number of orbitals possible for n=3 energy shell is ______.

1. 
   3
2. 
   5
3. 
   7
4. 
   9

Q.

Name three elements that have a single electron in their outermost shells.