. In the Periodic Table, how many periods include the elements of atomic numbers 1-18
Answers
Answered by
0
Answer:
There are seven periods in the periodic table, with each one beginning at the far left. A new period begins when a new principal energy level begins filling with electrons. Period 1 has only two elements (hydrogen and helium), while periods 2 and 3 have 8 elements. Periods 4 and 5 have 18 elements.
Explanation:
Answered by
0
Answer:
this is your answer ☝️☝️☝️☝️☝️
make me as brainlist
hope it's helpful to you
good afternoon ☺️
Attachments:
Similar questions