Sally is making a model of a Mg atom with an atomic mass number of 24. She has balls for the protons, neutrons, and electrons. She has added 6 neutrons to her model. How many more neutrons does she need to add to complete her neutral atom of magnesium?

The for any element is the number of protons in its atomic nuclei. In a neutral atom, the number of electrons are the same as the number of protons. The...

carbon-12 and carbon-14 are of the same element, carbon. this means that they have the same number of protons and the same number of electrons - just different numbers of...

The tells us how many protons and electrons are in the element. To work out the number of neutrons you do take away atomic number. 125-50 = 75

And $Z$ defines the identity of the element: $Z=1,H;Z=2,He;..........Z=6,C;........Z=37, Ru...........$ You don't have to remember these numbers, because a Periodic Table will be supplied to you in every test of...

The is the number of protons $("p"^+")$. In a neutral atom, the number of electrons $("e"^(-)")$ equals the number of protons. is the sum of the protons and neutrons $("n"^0")$...

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The answer is B) The must be exactly twice the for each atom. The number of protons is the atomic number of an element. The mass number is the sum...

$Z$ refers to the number of (nuclear) protons. The $Mg$ nucleus contains 12 positively charged particles (how can I make this statement?). To balance this charge, (the metal is electrically...

The mass of an atom is the sum of massive nuclear particles, protons (as above), and neutrons, neutrally charged, massive nuclear particles. Here the number of neutrons $=$ $120-48=?$ In...

Start by writing a balanced chemical equation for this $"Zn"_text((s]) + color(red)(2)"AgCl"_text((aq]) -> "ZnCl"_text(2(aq]) + 2"Ag"_text((s])$ Notice that you have a $color(red)(2):1$ between silver chloride and...