Question

The radius of an atom is of the order of 1Aº & the radius of

the nucleus is of the order of fermi. How many magnitudes

higher is the volume of the atom as compared to the

volume of the nucleus?

State the number of significant figures in

(i) 0.007 m2 (ii) 2.64 × 10 24 kg

(iii) 0.2370 g cm–3 (iv) 0.2300m

(v) 86400 (vi) 86400 m

Answer 1

Explanation:

(i) 1

(ii) 3

(iii) 4

(iv) 4

(v) infinite

(vi) 3