Answer:
9
Explanation:
mass number =protons+neutrons
Answer is: b) Na₂SO₄.
Oxidation number of sodium cation is +1 (2·(+1) = +2).
Oxidation number of sulfate anion is -2.
Compounds<span> must be electrically </span><span>neutral.</span>
Sodium sulfate is inorganic compound (salt). Sodium sulfate is white solid substance and highly soluble in water.
Answer:
Iron is an insulator because the outer electrons of its atoms can. move easily from one atom to another.
Explanation:
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Answer:
The electron arrangement of the outer energy level of an atom determines whether or not it will form chemical bonds.
Explanation:
