Answer:
d
Explanation:
they either gain valence electrons or share them depending on what elements or compound they are reacting with
<span>Both are composed of two elements (that means binary).
Ionic is composed of two ions, metallic cation-positive ions, and nonmetallic anion - negative ions. For example NaCl (sodium-chloride).
Molecular compounds are composed of two nonmetallic elements. For example HCl (hydrochloric acid).</span>
The atomic number of Hydrogen is 1, and the mass is 1.008.
This is the thing called the mass number of the thing
