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A magnesium atom reacts to produce a magnesium ion. Which diagram shows a magnesium ion?
a magnesium atom reacts to form magnesium ion losing 2 electrons and thus has a +2 charge and 10 electrons .
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A certain atom consists of 16 protons, 18 neutrons, and 16 electrons. What is its atomic number, mass number, and electron configuration?
So, you know that your atom contains $16$ protons $18$ neutrons $16$ electrons Right from the start, you know that you're indeed dealing with a neutral...
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Based on the electron configuration of sulfur, S, a sulfur atom will gain or lose how many valence electrons when bonding with lithium?
$2Li + S rarr Li_(2)S$ And if we wanted to (which we do) we could split this up into half equations: $2Li rarr 2Li^(+) + 2e^(-)$ $"Oxidation"$ $S+2e^(-) rarr S^(2-)$...
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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?
$Z$, $"the atomic number"$ of magnesium is 12. This means that there are 12 positively charged nuclear particles. This defines the particle as a magnesium atom. To represent the $""^24Mg$...
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What is the ground-state electron configuration of a neutral atom of magnesium?
Magnesium is element 12, so it has 12 protons and 12 electrons. The electrons fill the orbitals, reaching 12 when the 3s orbital is filled.
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What is the electron configuration for an excited atom of phosphorous, ready to emit a photon of energy and return to ground state? (configuration has to follow all rules except be in lowest energy)
Phosphorus has $15$. As such its electronic configuration in ground state is $1s^2 2s^2 2p^6 3s^2 3p^3$ The following electronic configurations could be excited states $1s^2 2s^2...
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Whats the difference between electron shells, electron levels, and electron orbitals?
Electron orbitals are probability areas of finding an electron in a given space. Different electron orbitals have different mathematical formulas giving different shapes and energy levels for the different electron...
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Magnesium, atomic number 12, has the electron configuration $[Ne]3s^2$. To what group does magnesium belong?
How do you remember it's Group 2. Well the best way is to consult a Periodic Table, and note the position of $Mg$, $Group$ $2$, and $Period$ $3$. You should...
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A sodium atom has an electron configuration of $1s^2 2s^2 2p^6 3s^1$. If the sodium atom becomes ionized, its new electron configuration will be the same as which element?
If the sodium is ionised, the outer $3s^1$ electron is lost, so the configuration becomes $1s^2 2s^2 2p^6$, which is the same as neon, $Ne$.
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A mixture of magnesium carbonate and magnesium oxide of mass $12.46*g$ underwent fierce heating. After heating, there were $8.43*g$ of salt remaining. What were the masses of magnesium carbonate, and magnesium oxide in the original sample?
$MgCO_3(s)+DeltararrMgO(s) + CO_2(g)$ And we would have to heat the magnesium salt VERY fiercely to get complete decarboxylation. $"Moles of carbon dioxide LOST"$ $=$ $(4.40*g)/(44.01*g*mol^-1)$ $=0.010*mol$ And therefore in...
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