well excuse the "s" at the end
nebula is an interstellar cloud of dust, hydrogen, helium and other ionized gases. although denser than the space surrounding them, most nebulae are far less dense than any vacuum created on earth – a nebular cloud the size of the earth would have a total mass of only a few kilograms. (wikipedia)
hope this helps! ❤ from peachimin
There are three valence electrons in an atom of Aluminum (Al).
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Al · or : Al : ·
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The answer is B.
Molecules are the smallest living thing.
Atoms are the smallest thing.
Hope this helps!!:)