respected sir

Asked by  | 29th Dec, 2009, 09:28: PM

Expert Answer:

Since they have the same number of valence electrons in the valence shell. In a chemical reaction, the number of electrons change takes place and hence the elements of the same group have similar properties.

Answered by  | 30th Dec, 2009, 09:03: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.