Question

Can someone answer all these questions

Answer 1

Answer:

okkk

18. 2,4

19. sodium

20. CH4 and NH3 (think so)

21. XY2 (think so)

22. eletrodes

23. 23 electrons(think so)

24. carbon

25. the total no.of protons and neutrons in an atom

hope its help to u

but in this some may be I correct sorry for the

be happy and follow me...