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svp [43]
3 years ago
9

For a certain chemical reaction, the bond energy of the reactants is 72 kJ, and

Chemistry
2 answers:
allochka39001 [22]3 years ago
6 0

Answer:

C. 33 kJ

Explanation:

:p

dalvyx [7]3 years ago
3 0
I think its A sorry if im wrong
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Which of the following atoms would be expected to be diamagnetic in the ground state?
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The atoms that would be expected to be diamagnetic in the ground state is  magnesium

The magnetism of an atom refers to its electronic configuration. A diamagnetic atom is an atom whose electrons are all paired.

A paired electron is an electron that occurs in pairs in its orbital shell.

At their respective ground state, the electronic configuration of the given elements are as follows:

The electronic configuration of magnesium is 1s²2s²2p⁶3s².  As such its a diamagnetic atom.

The electronic configuration of Potassium is 1s²2s²2p⁶3s²3p⁶4s¹. Hence, Potassium has one unpaired electron in its outermost shell.

The electronic configuration of Chlorine is 1s²2s²2p⁶3s²3p⁵. Hence, Chlorine has one unpaired electron in its outermost shell.

The electronic configuration of Cobalt is 1s²2s²2p⁶3s²3p⁶3d⁷4s². Hence, the unpaired electrons of Cobalt in its outermost shell are three.

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Learn more about diamagnetic atoms here:

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