The composition of two atomic particles is given below :

$\begin{array}{ccc}& & \\ X& Y& \\ \text{Protons}:& 8& 8\\ \text{Neutrons}:& 8& 9\\ \text{Electrons}:& 8& 8\end{array}$

(i) What is the mass number of X ?

(ii) What is the mass number of Y ?

(iii) What is the relation between X and Y ?

(iv) which element/elements do they represent?

Q. The composition of two atomic particles is given below :

	X	Y
Protons :	8	8
Neutrons :	8	9
Electrons :	8	8

(i) What is the mass number of X ?

(ii) What is the mass number of Y ?

(iii) What is the relation between X and Y ?

(iv) Which element/elements do they represent ?

Q. Composition of the nuclei of two atomic species $X$ and $Y$ are given as under
$X$ $Y$
Protons $=$ $6$ $6$
Neutrons$=$ $6$ $8$

Q. Composition of the nuclei of two atomic species A and B is given as under:

	A	B
Protons:	18	20
Neutrons:	22	20

Q. The atomic composition of element A is as follows: number of neutrons = x, atomic mass = 12, number of electrons = 6. The atomic composition of B is as follows: number of neutrons = y, atomic mass = 28, number of electrons = number of electrons in A + 8.
The ratio of x to y is:

Q.

Composition of the nuclei of two atomic species A and B is given as under :

Give the mass numbers of A and B. What is the relation between the two species and which element or elements they represent ?