Question

The elements of the second period of Modern Periodic Table along with their atomic number are
given below.
B(5), Be(4), 0(8), N(7), Li(3), C(6), F(9)
(a) Arrange these elements in the same order as they are in the periodic table.
(b) Which element has the (i) largest and (ii) smallest atom?
(c) why does the atomic radius change as we move from left to right across a period?​

Answer 1

Answer:

a) Li(3), Be(4), B(5), C(6), N(7), O(8), F(9) is the order.

b) largest atom is F(9)

smallest atom is Li(3)

c)Because valence electron was increased by one unit.