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weqwewe [10]
2 years ago
13

How many minutes would be required to electroplate 25.0 grams of chromium by passing a constant current of 4.80 amperes through

a solution containing CrCl3
Chemistry
1 answer:
True [87]2 years ago
5 0

Answer:

483.27 minutes

Explanation:

using second faradays law of electrolysis

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Which pair has identical electron configurations?
Thepotemich [5.8K]

Identical electron configurations : K⁺ and Cl⁻

<h3>Further explanation  </h3>

In an atom, there are levels of energy in the shell and sub-shell  

This energy level is expressed in the form of electron configurations.  

Charging electrons in the sub-shell uses the following sequence:  

<em>1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, 5s², 4d¹⁰, 5p⁶, 6s², etc.  </em>

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S²⁻ : [Ne] 3s²3p⁶

Cl : [Ne] 3s²3p⁵

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K⁺ : 1s² 2s² 2p⁶ 3s² 3p⁶

Cl⁻ : 1s² 2s² 2p⁶ 3s²3p⁶

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S :[Ne] 3s²3p⁴

Ar : [Ne] 3s²3p⁶

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Cl⁻ : 1s² 2s² 2p⁶ 3s²3p⁶

K : 1s² 2s² 2p⁶ 3s² 3p⁶4s¹

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