Science, asked by preetijagtap17, 4 months ago

which atom belongs to 2nd period and why from the give below
3Li
11Na
4Be
19K​

Answers

Answered by kaviKesri
1

Answer:

Halo

Explanation:

14he, 11ne,15p belong to the third period because according to their electronic configuration each element contains three shell k, l, m, 20ca,4be belong to second group because these elements 2 electrons in it outermost shell.

Previous Question
Next Question
Similar questions
Chemistry, 2 months ago
A baker found that the cake prepared by him is hard and small in size? which incrident he has forgotten to add that would have caused the cake to rise and become light? explain your answer.​
English, 2 months ago
what is acceleration??? ㅤ What is the use of such kind of watch?? ​
Chemistry, 2 months ago
Which is not correctly given here? A) Be > B> N (Atomic radius) B) B < Be <N (lonisation energy) C) Be <B<N (lonisation energy) D) Be > B> N (electron affinity)​...
Computer Science, 4 months ago
display number series between 10-20 in a form of a flowchart pls fast the due date is 9o'clock ​...
English, 4 months ago
Rewrite the following sentences into direct speech 1)He exclaimed with joy that their team had won the tournament. 2)Philla ordered her brother to turn down the television and let her work in peace. 3)The prisoner enquired if a lawyer had been arranged for him.
English, 10 months ago
what are the harmful effects of air pollution​...
Math, 10 months ago
Prove that: plz help me with the question mentioned above​...
Chemistry, 10 months ago
What happens when benzene diazonium chloride is heated with NaBF4;NaNO2 Cu...