Question

How to determine the group and period of an element using electron configuration?

Answer 1

⏺heya friend !.

✔here's your answer :-

〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰〰

▶ well , its quite easy to detect the group and period of an elemnts using electronic configuration.

⚫the last number of the configuration tells the valence electrons of that element , indicating group number.
⚫the total numbers tells the number of shells of an element indicate period number.

_______________________

➡example :-
⚫sodium (na) : electronic configuration is 2,8,1 ....
⚫so , 1 is the last number , it indicates group number .hence sodium is in group 1.
⚫now , the total numbers are 3 , so the period number is 3 .
⚫so sodium lies in group 1 and 3rd period.

➡another example :-
⚫oxygen (O2) : electronic configuration is 2,6.
now , through this, the group number will be 16 not 6 .
⚫this happens in case of most nonmetals .
⚫if 6 is last number then group number will be taken 16 not 6.
⚫now , period will be 2 .
⚫hence, oxygen lies in 16th group and 2nd period.

◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆

i hope it helps u !!!☺