Question 5 :
The atomic number is identical to the amount of ______ in the atom nucleus. 

Question 8 :
What is the name for the number of protons in an atom?

Question 9 :
The element used by Rutherford in his famous scattering experiment was

Question 13 :
For an element, $A= 34$ and $N= 19$, What is the atomic number of the element?

Question 14 :
<span>On the basis of Rutherford's model of an atom, which sub-atomic particle&#160;is present in the nucleus of an atom?</span>

Question 15 :
By knowing the number of protons in a neutral atom, one can determine :

Question 17 :
For an atom of a given element, the number of electrons equals to:<br/>

Question 19 :
Atomic number is given by the number of _____ of&#160;an atom.<br/>

Question 21 :
Which of the following path is assumed for the electron in the theory of Rutherford?

Question 22 :
When a mixture of aluminium powder and iron $(III)$ oxide is ignited, it produces molten iron and aluminium oxide. In an experiment, $5.4\ g$ of aluminium was mixed with $18.5\ g$ of iron $(III)$ oxide. At the end of the reaction, the mixture contained $11.2\ g$ of iron, $10.2\ g$ of aluminium of unreacted iron $(III)$ oxide. No aluminium was left. What is the mass of the iron $(III)$ oxide left?

Question 23 :
Rutherford's alpha particle scattering experiment eventually led to the conclusion that:

Question 25 :
All those elements belong to f- block whose atomic number are&nbsp;

Question 26 :
Atomic number of $N$ is $7$. The atomic number of 3rd member of nitrogen family is&#160;