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Olenka [21]
3 years ago
13

Please help I have 50 minutes on this quiz!?!

Chemistry
1 answer:
Mariana [72]3 years ago
7 0

Explanation:

put them in where the letters start with

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Which pair has identical electron configurations?
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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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Ar : [Ne] 3s²3p⁶

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Cl⁻ : 1s² 2s² 2p⁶ 3s²3p⁶

K : 1s² 2s² 2p⁶ 3s² 3p⁶4s¹

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3 years ago
Which property do metalloids share with non metals?
mamaluj [8]

Answer:

their ability to conduct heat and electricity.

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<span>Which of the following are indicators of a chemical change? Select all that apply.
</span>
These are the answers:

<span>color change
temperature change
precipitate formation
gas formation

Hope this helps.
</span>
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