✔ one type of atomtwo types of atomsmore than two types of atoms
When electrons are gained, a [___] ion is formed.
When 1 carbon atom combines with 2 oxygen atoms, the resulting substance is called a(n) [___].
An electron in the first energy level of the electron cloud has [___] an electron in the third energy level.
When electrons are lost, a [___] ion is formed.
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