Answer:
its atomic number will be 3 and it's mass number will be 7. it is lithium
Answer:A. Both animals and plants have changed over time.
Explanation:
Because plants and animals go through adaptations.
Explanation:
because in the right side there is 2 hydrogen( H) and 2 chloride (Cl) to balace them we have to replace 2.
(E) ionic aluminum fluoride (AlF3)
The answer is correct orientation and sufficient energy. Answer choice D