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Oksana_A [137]
2 years ago
7

Electronic configuration of magnessium

Chemistry
1 answer:
zepelin [54]2 years ago
7 0

Answer:

[Ne] 3s^{2}

Explanation:

You can alternatively write it as 1s^{2}2s^{2} 2p^{6}3s^{2}, but since noble gasses like neon are stable, we simply write their letter and then the configuration that goes after them.

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23.It is possible to dilute a solution by...Select one:a. adding more solute to the solution.b. adding more solvent to the solut
joja [24]

To dilute a solute in a solution, it is necessary to add a proper solvent for the reaction to occur, and adding more solvent will cause the solution to dilute even more, therefore the best answer will be letter B

7 0
1 year ago
The oxygen atom is smaller than the sulfur atom because _____(1) the outer electrons of oxygen are more effectively screened fro
Romashka [77]

Answer: Option (2) is the correct answer.

Explanation:

Atomic number of oxygen atom is 8 and its electronic distribution is 2, 6. So, it contains only 2 orbitals which are closer to the nucleus of the atom.

As a result, the valence electrons are pulled closer by the nucleus of oxygen atom due to which there occurs a decrease in atomic size of the atom.

Whereas atomic number of sulfur is 16 and its electronic distribution is 2, 8, 6. As there are more number of orbitals present in a sulfur atom so, the valence electrons are away from the nucleus of the atom.

Hence, there is less force of attraction between nucleus of sulfur atom and its valence electrons due to which size of sulfur atom is larger than the size of oxygen atom.

Thus, we can conclude that the oxygen atom is smaller than the sulfur atom because the outer orbitals of oxygen are located closer to the nucleus than those of sulfur.

3 0
3 years ago
Write formulas for the binary ionic compounds formed between the following elements: a. Potassium and iodine b. Magnesium and ch
lianna [129]

i think it's B Magnesium and chlorine



5 0
3 years ago
Which shows an isomer of the molecule below?
blsea [12.9K]

Answer:

D.

Explanation:

Hello,

In this case, the isomer of an organic compound is another organic compound having the same molecular formula but different structural formula, thus, the given compound's molecular formula is C₅H₈ since it is an alkyne due to the triple bond. Next, we analyze each option:

A. C₅H₁₂

B. C₅H₁₀

C. C₅H₁₀

D. C₅H₈

For that reason answer is D. based on the molecular formula as well as due to the presence of the triple bond unsaturation (alkyne as well).

Best regards.

3 0
3 years ago
Which class of compounds does ammonia blog
Igoryamba
T'belongs to the hydrides, it's a nitrogen hydride. 
8 0
3 years ago
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