Answer:
The period number refers to the number of electron shells or primary energy levels an atom of each element has. Ex: Period 3 elements—Na, Mg, Al, Si, P, S, Cl, and Ar—have three primary electron energy levels.
true
Explanation:
sorry if wrong pa brainliest nalang :D
8. c
9. e
10. k
11. L
12. d
13. j
14. h
15. g
16. a
17. F
18. b
19. i
Structural formula shows the atoms and bondsin an organic compound.
Structural formula of methane shows
1 Carbon atom is singly bonded to 4 hydrogen atoms.
