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Both Mg and Na have the same outer energy level (shell). Mg has one proton more than NA and one electron more. The charge on th eouter shell the effective nuclear charge is reduced by the inner core electrons, which are the ame in both cases So the pull experienced by the valence electrons towards the nucleus is more in the case of Mg than Na. Hence Mg has slightly smaller size (radius) than Na.
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What would be observed from an aqueous mixture of magnesium chloride and sodium hydroxide?
You would observe precipitation of magnesium hydroxide.
What would be observed and why when you mix magnesium chloride and sodium hydroxide?
Magnesium hydroxide, a precipitate, is formed.
Why aren't there many more than 100 occurring elements?
Because scientists just simply add a proton to an element, and they get the next element. For example, of you had one sodium atom (all sodium atoms have an atomic number of 11), and added a proton to it, you would get magnesium atom (all magnesium atoms have an atomic number of 12). So if scientists did this with element 99, they get element 100.
Sodium has an atomic mass of 23 and an atomic number of 11 so the number of neutrons must be?
Sodium does have an atomic number of 11, and if the isotope's atomic mass is 23, the atom would have 11 protons (the atomic number) and 12 neutrons (the atomic mass minus the atomic number). The atom would have 11 electrons, and when ionized it would lose one and take on a charge of +1.
Would you name some metals that react with acids?
Some of these metals are: Calcium, Magnesium, Sulfur, Sodium, Potassium, ...
What would be observed from an aqueous mixture of magnesium chloride and sodium hydroxide?
You would observe precipitation of magnesium hydroxide.
What would be observed and why when you mix magnesium chloride and sodium hydroxide?
Magnesium hydroxide, a precipitate, is formed.
What element has 12 protons and 12 neutrons?
Atomic mass is the number of protons added to number of neutrons. Number of protons is element's atomic number, and you can count neutrons by subtracting atomic number from atomic mass. So, it can be any substance which has a atomic number 12 lower than atomic mass. Basically, i would say that it is Magnesium 24 isotope [most common Magnesium isotope], because it has 12 protons and 12 neutrons [12 + 12 = 24] Sodium 23 isotope [also most common] fits perfectly too. However, it can be any other material's isotope. For example Aluminum 25 [13+12=25] Neon 22 [10+12=22]
What kind of bond would sodium have with magnesium?
A metallic bond Sodium is in group one and magnesium in group two (groups 1-3 are metals)
Why would sodium never have 12 protons?
Sodium has 11 protons. The element with 12 protons is magnesium
The atomic emission spectra of a sodium atom on earth and of a sodium atom in the sun would be?
The same.
Why aren't there many more than 100 occurring elements?
Because scientists just simply add a proton to an element, and they get the next element. For example, of you had one sodium atom (all sodium atoms have an atomic number of 11), and added a proton to it, you would get magnesium atom (all magnesium atoms have an atomic number of 12). So if scientists did this with element 99, they get element 100.
What would happen if magnesium is added to a solution of sodium hydrogen sulphate?
I haven't a clue
What is the most common salt found in ocean water A potassium B calcium carbonate C magnesium D sodium chloride A potassium B calcium carbonate C magnesium D sodium chloride?
That would be D. sodium chloride.
If an atoms contains 11 protons and 12 neutrons its atomic number is?
The atomic number is determined by the number of Protons. So in this case it would be 11 (Sodium). The mass number is the total of protons and neutrons, so in this case 23. So this isotope of sodium would be 23Na.
What mass of sodium chloride is produced if 92.0 of sodium reacts with excess Chlorine?
Sodium has an atomic weight of 22.99 g/mol. Chlorine has an atomic weight of 35.45 g/mol. NaCl has an atomic weight of 58.44 g/mol. Therefore 92g of sodium would yield 233.86g of sodium chloride (NaCl).
Why does molten sodium chloride conduct electricity but crystalline magnesium chloride does not?
In the molten state the ions of sodium chloride are free to move. Magnesium chloride would also conduct if it were molten. Since the ions of the magnesium chloride are bound together in the crystal lattice they cannot carry a current.
