Question

Write down the electroni
configuration of the followin
elements from the given atomic
numbers. Answer the following
question with explanation.
a. Li, Si, He, ,,Na, 15P Which of these
elements belong to be period 3?
I​

Answer 1

Answer:

this question doesn't make any sort of sense

I'm really sorry for answering like this but bro

edit your question before asking and make it proper

there are no atomic number given

there are unnecessary commas