Answer:
Noble gas
Explanation:
With the exception of helium, all elements in Group 18 contain 8 electrons in the outermost shell; these are the noble gases.
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Translation
Answer:
activated complex.
Explanation:
c. Ni3+.
b. Ni2+.
d. Ni4+.
the answer is c because when you take a nickel and fluorine you get Ni3+
Answer:
c
Explanation:
B) pure sodium reacts violently with water
C) the boiling point of water is 100’C
D) helium does not tend to react with anything