Atomic mass of sodium is 22.9 g/mol
atomic mass of chloride is 35.45 g/mol
sodium chloride is 22.99 + 35.45= 58.44 g/mol
19. D
20. Sorry don’t know but if I had to guess it would be B
21. A because fluorine has a higher electronegativity
22. D
23. B
24. Again don’t really know but I would guess D
25. A
Answer:
Different elements emit differently colors of light because when electrons return to the lower energy levels, they emit energy in a different form of light
Explanation:
Carbon does not become an ion (it neither donates nor accepts electrons from others). Instead, carbon tends to share electrons with other atoms where carbon becomes a central atom from which molecules can branch off.