Question

1) With reference to the Modern Periodic Table, answer the following questions:
a) Arrange the elements Li, C, N, O, B in decreasing order of their atomic radius?
b) Which type of elements lịe along the border of the the zig-zag line in this table? Name any
two of them?
c) Mention the groups belonging to s-block of the Modern Periodic Table?
d) What trend is seen in the non-metallic character of the elements as we go from left to righ
within a period?
e) What trend is seen in the valency of the elements while going from top to bottom in a
group?​

Answer 1

Answer:

a) O>N>C>B>Li

b) metaloid Ex. Germenium and Silicon

c)1st and 2nd

d)non-metallic character increases from right to left in period.

e)valency will remain same while going from top to bottom in a group.