Type in the correct values to correctly represent the valence electron configuration of magnesium: AsB A = B =
2 answers:
<h2>Answer : The correct answer will be A =3 and B =2 as the electron configuration of Mg will be as ![[Ne] 3s^{2}](https://tex.z-dn.net/?f=%20%5BNe%5D%203s%5E%7B2%7D)
where A is 3 and B is 2.</h2><h3>Explanation : </h3>
Magnesium has atomic number as 12. The complete electron configuration will be as .
which can be abbreviated as as the electron configuration resembles to that of neon element.
In the outermost shell the electron in 3 s orbital is only 2. So, therefore 3 is the orbital of S and there are 2 electrons in it.
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Answer:
After 2000 years, the first after will be 4m lower.
After 2000 years, the second area will be 14m higher.
Explanation:
From the given information:
At the first area:
if the wind is eroding at 2 mm/year, then after 2000 years; we have:
2 mm/year × 2000 year = 4000 mm
4000 mm to meters, we have:
= 4 m lower
At the second smaller area:
Given that the wind is depositing it at the rate of 7 mm per year;
Then:
7 mm/year × 2000 year = 14000 mm
=14 m higher