Arrangement of Electrons around the Nucleus

Q.

The number of electrons present in K, L, M shell respectively is:

1. 2, 8, 32

2. 2, 8, 8

3. 2, 8, 10

4. 2, 8, 18

Q.

Maximum number of electrons which can be filled in the third shell of an atom is:

1. 8

2. 18

3. 10

4. 32

Q.

The atom of an element has $20$ protons, $20$ neu­trons, and $20$ electrons. Find out its electronic configuration mentioning the shell.

Q.

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

1. 2

2. 8

3. 32

4. 18

Q. Which of the following has different masses in different elements?​

1. Nucleus
2. Neutron
3. Proton
4. Electron

Q. Which of the following arrangement of electrons do not represent Bohr’s model of an atom correctly?

1. 
2. 
3. 
4. 

Q. Which of the following statements are true about an element having an atomic number of 11?

1. It has 2 electrons in its M shell.
2. It has 8 electrons in its L shell.
3. It has 9 electrons in its L shell.
4. It has 2 electrons in its K shell.

Q.

Identify the $M{g}^{2+}$ ion from the figure where, n and p represent the number of neutrons and protons respectively.

1. 

2. 

3. 

4. 

Q. In the given diagrams, the circular rings around the nucleus represents:

1. 
2. 
3. 
4. 

Q.

Thomson compared atom to watermelon (or plum pudding) and thus derived some conclusions.Which of the following are his conclusions?

1. The seeds and edible part both are positive charges.

2. The seeds are the electrons and red edible part is the positive sphere

3. The seeds and edible part both are electrons

4. The seeds are positive spheres and red edible parts are the electrons