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Kaylis [27]
2 years ago
11

glacial striations in the bedrock of south africa indicate that glaciers once moved across the african continent the presence of

glaciers on the surface of africa is evidence that
Chemistry
1 answer:
finlep [7]2 years ago
8 0
Okay, so the answer is
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Chlorobenzene, C6H5Cl, is used in the production of many important chemicals, such as aspirin, dyes, and disinfectants. One indu
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3.8 mole Cl2
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What happens to a glass of pure fruit juice when water is added to it?
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Need some help, please. Explain why anions are always larger than the atoms from which they are derived, while cations are alway
ANTONII [103]

The question requires us to explain the differences in radii of neutral atoms, cations and anions.

To answer this question, we need to keep in mind that a neutral atom presents the same number of protons (positive particles) and electrons (negative particles). Another important information is that the protons are located in the nucleus of the atom, while the electrons are around the nucleus. Also, there is an electrostatic force between protons and electrons, which means that they the protons tend to attract the electrons to the nucleus.

While a neutral atom presents the same number of protons and electrons, a cation is an ion with positive charge, which means it has lost one or more electrons. In a cation, the balance between protons and electrons doesn't exist anymore: now, there is more positive than negative charge (more protons than electrons), and the overall attractive force that the protons have for the electrons is increased. As a result, the electrons stay closer to the nucleus and the radius of a cation is smaller than the neutral atom from which it was derived.

On the other side, anions present negative charge, which means they have received electrons. Similarly to cations, the balance between protons and electrons doesn't exist anymore, but in this case, there are more electrons than protons. In an anion, the overall attractive force that the protons have for the electrons is decreased. As a result, the electrons are "more free" to move and, as they are not so attracted to the nucleus, they tend to stay farther from the positive nucleus compared to the neutral atom - because of this, the radius of an anion is larger than the neutral atom from which it was derived.

3 0
1 year ago
What do all viruses have in common? Choose more than one answer.
vitfil [10]

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1, 3, 4, and 5

Explanation:

the number would be the dot order!

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3 years ago
(8x-1)<br> (3x<br> + 4)<br> (3x + 9)
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Answer: -9x^2 -31x -36               I hope this helped!      ~GalaxyGamingKitty      Can I have Brainliest if it is right?

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3 years ago
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