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dolphi86 [110]
2 years ago
15

What rule/principle states that electrons in the same sublevel (p, d, or f) are placed in individual orbitals, before they are p

aired up, to increase atomic stability?
Aufbau principle

Hund’s rule

Pauli exclusion principle
Chemistry
2 answers:
LenKa [72]2 years ago
6 0

Answer:

hunds rule

Explanation:

Radda [10]2 years ago
3 0

Answer:

Hunds Rule

Explanation:

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a compound

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A binary compound of oxygen with another element is called oxide. An oxide is a binary compound of oxygen and another element. Oxygen combines with metals and non-metals to form respective oxides.

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Which element would be expected to have a similar physical and chemical properties as oxygen, and why?
soldi70 [24.7K]

Oxygen and Sulfur are in the same group.

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5 0
2 years ago
Gifblaar is a small South African shrub and one of the most poisonous plants known because it contains fluoroacetic acid (FCH2CO
PSYCHO15rus [73]

[H_{3}O^{+}] = 0.00770 M

The equilibrium equation representing the dissociation of FCH_{2}COOH

FCH_{2}COOH(aq) + H_{2}O (l)    FCH_{2}COO^{-}(aq)+ H_{3}O^{+}(aq)

Given [H_{3}O^{+}] = 0.00770 M

Let the initial concentration of acid be x and change y

So y = [H_{3}O^{+}] =[FCH_{2}COO^{-}] = 0.00770 M

pK_{a} = 2.59K_{a} = 10^{-2.59}   = 0.00257 M

K_{a} = \frac{(0.00770 M)(0.00770 M)}{x - 0.00770}

0.00257 = \frac{0.00005929}{x - 0.00770}

0.00257 x - 0.00001979 = 0.00005929

x = 0.031 M

Therefore, initial concentration of the weak acid is <u>0.031 M</u>

4 0
3 years ago
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