The quantum numbers for the last valence electron in nickel are (3, 2, 0, -½).
The electron configuration of nickel is [Ar]4s²3d⁸
The last electron added is a 3d electron, so <em>n</em> = 3 and <em>l</em> = 2.
We construct a table of quantum numbers.
<u>Element </u><em><u>n</u></em><u> </u><em><u>l</u></em><u> </u><em><u>m</u></em><u>ₗ mₛ </u>
Sc 3 2 2 +½
Ti 3 2 1 +½
V 3 2 0 +½
Cr 3 2 -1 +½
Mn 3 2 -2 +½
Fe 3 2 2 -½
Co 3 2 1 -½
Ni 3 2 0 -½
The quantum numbers for the last electron in nickel are (3, 2, 0, -½).
Answer:
Volume is 10.35 L
Explanation:
we are given;
- Initial volume v₁ is 10 L
- Initial pressure, P₁ as 745 mmHg
- New pressure ,P₂ as 720 mmHg
We are required to determine the new volume, V₂
We are going to use the Boyle's law;
According to Boyle's law the volume and the pressure of a fixed mass of a gas are inversely proportional at a constant temperature.
Therefore;
P₁α 1/V
That is;
P = k/V
k = PV
At different conditions;
P₁V₁ = P₂V₂
Rearranging the formula;
V₂ = P₁V₁ ÷ P₂
Thus;
New volume = (10 L× 745 mmHg) ÷ 720 mmHg
= 10.35 L
Thus, the new volume of the gas at the new pressure is 10.35 L
Answer:
The answer to your question is Endothermic reaction
Explanation:
Endothermic reactions are reactions that absorbe energy from the environment.
All the reactions that needs heat to proceed are endothermic, example: photosynthesis, reactions in the laboratory that are heated, heat our meals.
This is an endothermic reaction because the enthalpy of the products is higher than the enthalpy of the reactants,
Answer:
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