Read the followin

(a)

(i) Using the general formula:

The mass number of an atom= Number of Neutrons + Number of Protons

The mass number of X is (8+8) = 16.

(ii) What is the mass number of Y?

(b)

(ii) The mass number of Y is (8+9) = 17.

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

(c)

(iii) The relation between X and Y is, both are isotopes.

(iv) Which element/elements do they represent?

(d)

(iv) Both the element X and Y represent oxygen.

(v) Give two uses of isotopes.

(e)

1) In medicine, isotopes are used in photosynthesis to study the effect of animal metabolism on food.

2) Isotopes are used in the sensors of smoke detectors in buildings