Answer:
118
Explanation:
Of these 118 elements, 94 occur naturally on Earth. Six of these occur in extreme trace quantities: technetium, atomic number 43; promethium, number 61; astatine, number 85; francium, number 87; neptunium, number 93; and plutonium, number 94.
I believe the ratio is 1:2
Answer:
Cool air moves down while hot air rises
Answer:
Because of its ability to create cations, hydrogen is a nonmetal that belongs to the same category as metals. Despite its presence in Group I (alkali metals) of the periodic table, hydrogen is not considered a metal.
Hydrogen is categorized as a nonmetal. This is due to the fact that it behaves like a non-metal.
Its very confusing lol
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