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Burka [1]
3 years ago
5

An exciton is: A charged particle made of electrons A charged particle made of holes A neutral particle made of an electron and

hole A photon in an excited state
Chemistry
1 answer:
Alex3 years ago
7 0

Answer:

A neutral particle made of an electron and hole

Explanation:

Exciton

It is the combination of an electron and a hole ( hole refers to the vacancy of an electron ) . And , as both the electron and the hole have the same charge but the polarity is opposite , the combination will lead to a neutral compound , i.e. ,  Exciton have no charge and so neutral .

It is free to move in the nonmetallic crystal and since it charge less , it is difficult to detect it directly .

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In the compound iodine heptafluoride: (hints: write out the molecular formula of this compound before answering the question. Al
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In the compound iodine heptafluoride: (hints: write out the molecular formula of this compound before answering the question. Also be sure you clearly understand the concepts of charge, oxidation numbers, how to determine charge and oxidation numbers, and - most important of all! - the similarities and the differences between charges and oxidation numbers)

<u>Each fluorine atom has a charge of 1</u>

<h3>What is iodine heptafluoride?</h3>

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To learn more about iodine heptafluoride from the given link:

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7 0
1 year ago
Need help with this chem question thanks
IRISSAK [1]

Answer:

The answer to your question is letter A.

Explanation:

Isomers are molecules that have the same molecular formula but have a different structure. The molecule from which are looking an isomer has 5 carbons and 1 double bond. Then we need to look for another molecule with these components.

A.- This molecule has 5 carbons and 1 double bond, This structure is an isomer of the first one.

B.- This molecule has 3 carbons and 1 double bond, it's not an isomer of the first structure.

C. This molecule has 4 carbons and 1 triple bonds, it's not an isomer of the first structure.

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5 0
3 years ago
Formula of preparation of sodium hydroxide​
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It is an ionic compound consisting of sodium cation (Na+) and hydroxide (OH-) anion.

7 0
2 years ago
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