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nalin [4]
2 years ago
7

Where is the Sun located?

Chemistry
1 answer:
PSYCHO15rus [73]2 years ago
3 0

Answer:

in the center

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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
A qué temperatura en grados centígrados se encuentra la Luna, si se sabe que está en 3 Kelvin aproximadamente?
Viktor [21]

Answer:

Can you do it in english please don't understand Spanish much. thanks

4 0
2 years ago
What is the molar mass of CaCl2?
Aleks04 [339]

Answer: The molar mass of the given compound is 1.11\times 10^2 g/mol

Explanation:

In molecular formula of CaCl_2 there are two chlorine atoms and one calcium atom.

The atomic mass of the calcium = 40.07 g/mol

The atomic mass of chlorine = 35.5 g/mol

Molar mass of the guven compound is :

40.07 g/mol + 2\times 35.5 g/mol=111.07 g/mol\approx 1.11\times 10^2 g/mol

The molar mass of the given compound is 1.11\times 10^2 g/mol

8 0
2 years ago
Who controlled the distribution of agricultural products within a Mississippian community?
Sunny_sXe [5.5K]

Answer:

The chiefs

Explanation:

hope my answers is helpful

5 0
2 years ago
Read 2 more answers
According to the kinetic-molecular theory, the average kinetic energy of gas
vladimir1956 [14]

Answer:

The average kinetic energy of a gas depends only on its temperature.

Explanation:

The average kinetic energy of particles in a gas can be found using the equation

\displaystyle \text{Average K.E.} = \frac{3}{2}k\cdot T,

where

  • k is the Stefan-Boltzmann constant, and
  • T is the absolute temperature of this gas (the one in degree Kelvins.)

As seen in this equation, the average kinetic energy of particles in a gas depends only on the temperature of the gas. Also, since the question is asking for the average not the total kinetic energy, the number of particles in this gas doesn't matter, either.

8 0
3 years ago
Read 2 more answers
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