How many groups and periods are there in the Modern Periodic Table? How do the atomic size and metallic character of elements vary as we move:
(a) down a group and
(b) from left to right in a period
Answer:
There are 18 groups and 7 periods in the Modern Periodic Table.
- Atomic size increases
- Metallic character increases
- Atomic size decreases
- Metallic character decreases