Answer:
Ca^+2
Explanation:
Hence, the correct option is A.
Chlorine is the most electronegative
Answer:
Noble Gases are very stable because...
1) Noble Gases have a full octet
2) Low chemical reactivity
Explanation:
This means that is has 8 valence electrons so it won't need any more, so it is less likely to react with other substances.
Since the comb is positively charged, the hair will stick to the comb.
I think
Succession would help over time because new things will appear after