5. epsom salt mgso₄ (we already wrote o, above, so will leave it out here)\n|element|chemical…

Explanation:

Step1: Recall element properties

For magnesium (Mg):

• Group: 2
• Period: 3
• Atomic number ($Z$) = 12. Since atomic number = number of protons = number of electrons in a neutral atom, number of protons = 12, number of electrons = 12.
• Atomic mass ($A$) ≈ 24.31. Number of neutrons = $A - Z$, so number of neutrons ≈ 24.31 - 12 ≈ 12.31, usually rounded to 12 for the most common isotope.

Step2: Recall sulfur (S) properties

• Group: 16
• Period: 3
• Atomic number ($Z$) = 16. So number of protons = 16, number of electrons = 16 in a neutral atom.
• Atomic mass ($A$) ≈ 32.07. Number of neutrons = $A - Z$, so number of neutrons ≈ 32.07 - 16 ≈ 16.07, usually rounded to 16 for the most common isotope.

Element	Chemical symbol	Group	Period	Atomic Number	Atomic Mass	Protons	Electrons	Neutrons
Magnesium	Mg	2	3	12	24.31	12	12	12
Sulfur	S	16	3	16	32.07	16	16	16

Answer:

Element	Chemical symbol	Group	Period	Atomic Number	Atomic Mass	Protons	Electrons	Neutrons
Magnesium	Mg	2	3	12	24.31	12	12	12
Sulfur	S	16	3	16	32.07	16	16	16