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fiasKO [112]
3 years ago
8

4.

Chemistry
2 answers:
goldenfox [79]3 years ago
7 0

Answer:

Fluorine

Explanation:

Remembering the equation for Coulombic attraction, we know that an electrostatic attraction between two charges is directly proportional to the product of the two charges and inversely proportional to the square of a distance between them. This is modeled by the equation:

F = k \frac{q_1 q_2}{r^2}

The attraction force we are analyzing in this problem occurs between a nucleus of a halogen and its valence electrons. Essentially, according to the equation, the greater the distance between a nucleus and valence electrons, the lower the attraction force. This implies that a valence electron would be lost more easily from an atom which has the highest radius.

Going down the group, the number of electron shells increases and the radius of halogens increases. This means that fluorine has the smallest radius and attracts its valence electrons strongest.

jeka943 years ago
4 0

Answer:

<em>The correct option is D)  fluorine​</em>

Explanation:

Fluorine has 9 electrons. Florine atom will have only two orbits in which the electrons will revolve around the nucleus. First orbit will have two electrons. The second orbit will have seven electrons. These orbits will be pulled by a greater force by the nucleus of an atom. Hence, they will be less likely to lose an electron.

Other atoms of the group 17 have more orbits hence, the space between the nucleus and the outermost orbit is greater than that of fluorine atoms. Hence, they will have more chances of losing an electron as compared to fluorine.

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Answer:

See Explanation

Explanation:

Given

(a) to (d)

Required

Determine whether the given parameters can calculate the required parameter

To calculate either Density, Mass or Volume, we have

Density = \frac{Mass}{Volume}

Mass = Density * Volume

Volume = \frac{Mass}{Density}

(a) 432 g of table salt occupies 20.0 cm^3 of space

Here, we have:

Mass = 432g

Volume = 20.0cm^3

The above can be used to calculate Density as follows;

Density = \frac{Mass}{Volume}

Density = \frac{432g}{20.0cm^3}

Density = 21.6g/cm^3

(b) 5.00 g of balsa wood, density of balsa wood : 0.16 g/cm^3

Here, we have:

Mass = 5.00g

Density = 0.16g/cm^3

This can be used to solve for Volume as follows:

Volume = \frac{Mass}{Density}

Volume = \frac{5.00g}{0.16g/cm^3}

Volume = 31.25cm^3

(c) 32 cm^3 sample of gold density of 19.3 g/cm^3

Here, we have:

Volume = 32cm^3

Density = 19.3g/cm^3

This can be used to calculate Mass as follows:

Mass = Density * Volume

Mass = 32cm^3 * 19.3g/cm^3

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(d) 150 g of iron, density of Iron = 79.0 g/cm^3

Here, we have

Mass = 150g

Density = 79.0g/cm^3

This can be used to calculate volume as follows:

Volume = \frac{Mass}{Density}

Volume = \frac{150g}{79.0g/cm^3}

Volume = 1.90 cm^3 <em>Approximated</em>

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Water can only be the solvent, never the solute is the statement about a solution that is correct.

  • The solute is the substance that, in general, is found in less quantity and that dissolves in the mixture.

  • The solvent, on the other hand, is the substance that usually appears in greater quantity and where the solute dissolves.

  • The most usual thing is that the solvent is the substance that establishes the physical state of the solution.

  • Water is considered a universal solvent, since it is the liquid that dissolves the most substances, a quality linked to its status as a “polar molecule”, this is due to its ability to form hydrogen bonds with other substances.

Solubility depends on the properties of a solvent that allow it to interact with a solute in a stronger way than the solvent particles do with each other.

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Learn more here: brainly.com/question/2835889

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