1. Option 4
2. Option 2
3. Option 2
4. Option 4 (not completely sure)
5. Option 2
6. Option 1 (not completely sure)
7. Option 4
8. <span>Isotopes are caused by different numbers of neutrons in the electron cloud
9. Not sure of the question
10. Positive charge
11. nucleus
</span>
Answer:
yes I think so
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
There are 100 tens in 1,000
3 boxes times 40 = 120 + 3 = 143
or 3 boxes times 43 = 129