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nadezda [96]
1 year ago
6

What are valence electrons and how do they affect the properties of an atom?

Chemistry
1 answer:
vlada-n [284]1 year ago
4 0

The term "valence electrons" refers to all of the electrons in an atom's outermost shell.

The centre of the atom is where the nucleus is. The nucleus contains protons and neutrons. The electrons travel in a specific circular direction and at a specific distance from the nucleus.

The atom's final shell's electrons take part in chemical reactions and the production of bonds. Both ionic and covalent bonding involve valence electrons. Metals are elements with one, two, or three electrons in their final shell.

These substances become positive ions after losing their electrons. Non-metals are substances with 5, 6, or 7 electrons in the outermost shell. These substances all gain electrons and change into negative ions.

Ionic bonds are those created by the transfer of electrons between metals and non-metals. For instance, ionic bonding allows sodium and chlorine to interact to generate sodium chloride.

To know more about valence electrons here

brainly.com/question/371590

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Which of the following best explains why the tundra is one of the least biologically diverse biomes
trapecia [35]

weather

plants don't survive in the extreme cold and ice that cover these regions year-round.

less plants less animals

8 0
3 years ago
LOOK AT THE IMAGE FOR THE QUESTION PLEASE
Nostrana [21]

From the atomic clock that utilizes C-133 which has an approximate frequency of 9.193 x 109 Hz. The wavelength of the energy is calculated to be 0.0326m.

From the given information:

  • The frequency f = 9.193 × 10⁹ Hz = 9.193 × 10⁹ 1/s
  • The wave speed c = 3.00 × 10⁸ m/s

Recall that:

The wavelength is the spatial successive distance between two crests of a wave and can be expressed by the formula:

\mathbf{\lambda = \dfrac{c}{f}}

\mathbf{\lambda = \dfrac{3.00 \times 10^8 \ m/s }{9.193 \times 10^9 \  1/s}}

\mathbf{\lambda =0.0326  \ m}

Therefore, we can conclude that the wavelength of the atomic clock is 0.0326m. As such Option D is correct.

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4 0
3 years ago
Why do you not need to perform the titration while the sample is at its original temperature?
liberstina [14]

We do not perform the titration while the sample is at its original temperature because reaction is too slow at original temperature and requires high activation energy.

A titration is a method where the concentration of an unknown solution is ascertained by comparing it to a solution of known concentration. The analyte (the unknown solution) is typically added in a known amount to the titrant (the known solution) from a buret until the reaction is finished.

The slow energy step in the reaction process may require a high activation energy, and the proportion of activated molecules needed to reach this reaction at room temperature or original temperature is too low, so most molecules cannot cross this peak. As a result, the reaction at room temperature proceeds very slowly (the final product is not reached). Heat can enhance the proportion of active molecules and catalyse a larger-scale reaction.

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4 0
2 years ago
A conductivity apparatus was inserted into a container of distilled water. The light bulb did not light up. What is the BEST exp
aliya0001 [1]
Distilled water is neutral, so there are no ions to allow the flow of electricity
4 0
3 years ago
Read 2 more answers
If the pressure is 0.9 kPa. and the volume is 4.0L, then the pressure changes to 0.20 kPa. What is the new volume?
ch4aika [34]

Answer:

18 L

Explanation:

boyles law

P1V1 = P2V2

V2 = P1V1/P2

V2 = (.9 * 4)/.2

V2 = 18

4 0
2 years ago
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