Question

Help with this worksheet please (24pts)

Answer 1

• Atoms that loss or gain electrons are called ions. There are two types of ions: cations and anions.
• Here, 2+ represents that Calcium (Ca) should gain 2 more electrons so that its number equals to that of protons.
• 3- represents that Nitrogen (N) should loss 3 electrons to equivalent with the number of protons.
• Here, anions are S^2-, P^3-, Se^2-, Br^-.
• While cations are Cr^3+, Ag^+, Li^+, Ba^2+.
• The number of protons of Magnesium (Mg) = 12
• The number of nuetrons of Mg = 12
• The number of electrons of Mg = 12

Hope you could get an idea from here.

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