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3 years ago

Which compound will have the most polarization?

Chemistry

1 answer:

frosja888 [35]3 years ago

6 0

Answer:

Option D. Magnesium oxide.

Explanation:

The <em>polarization</em> of a compound is determined by the formation of dipoles which is the result of the difference in electronegativities between the bonds.

Since all the compounds are with magnesium, you can use the periodic trend of the other elements, i.e. tellurium, selenium, sulfur and oxygen to determine which one has the most electronegativiy difference when bonded to magnesium.

Oxygen, sulfur, selenium, and tellurium are all in the same group of the periodic table, group 16.

In a group the electronegativy decreases when you move down the grpup, so the most electronegative of all those four elements is oxygen.

Now you can conclude that the compound of magnesium with oxygen, magnesium oxide (option D), will be have the most polarization of the four given compounds.

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Which electrons are the valence electrons of the atom?

Veronika [31]

Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell. We can write the configuration of oxygen's valence electrons as 2s²2p⁴

6 0

2 years ago

Tin(II) fluoride (SnF2) is often added to toothpaste as an ingredient to prevent tooth decay. What is the mass of F in grams in

Alexeev081 [22]

Answer:

In 33.7 grams SnF2 we have 8.17 grams of F

Explanation:

Step 1: Data given

Mass of SnF2 = 33.7 grams

Molar mass of SnF2 = 156.69 g/mol

Molar mass of F = 19.00 g/mol

Step 2: Calculate moles of SnF2

Moles SnF2 = mass / molar mass

Moles SnF2 = 33.7 grams / 156.69 g/mol

Moles SnF2 = 0.215 moles

Step 3: Calculate moles F

For 1 mol SnF2 we have 2 moles F

For 0.215 moles SnF2 we have 2*0.215 = 0.430 moles F

Step 4: Calculate mass F

Mass F = moles F * molar mass F

Mass F = 0.430 moles * 19.00 g/mol

Mass F = 8.17 grams

In 33.7 grams SnF2 we have 8.17 grams of F

6 0

3 years ago

PLEASE HELP ASAP

V125BC [204]

Answer:

third one

Explanation:

5 0

2 years ago

The movement of food energy from one organism to another is called a

Leni [432]

It’s called a food chain

6 0

3 years ago

In a room full of air, the air is mainly composed of Nitrogen and Oxygen molecules (both at room temperature). Find (to two sign

zloy xaker [14]

Explanation:

Expression for the $v_{rms}$ speed is as follows.

$v_{rms} = \sqrt{\frac{3kT}{M}}$

where, $v_{rms}$ = root mean square speed

k = Boltzmann constant

T = temperature

M = molecular mass

As the molecular weight of oxygen is 0.031 kg/mol and R = 8.314 J/mol K. Hence, we will calculate the value of $v_{rms}$ as follows.

$v_{rms} = \sqrt{\frac{3kT}{M}}$

= $\sqrt{\frac{3 \times 8.314 J/mol K \times 309.02 K}{0.031 kg/mol}}$

= 498.5 m/s

Hence, $v_{rms}$ for oxygen atom is 498.5 m/s.

For nitrogen atom, the molecular weight is 0.028 kg/mol. Hence, we will calculate its $v_{rms}$ speed as follows.

$v_{rms} = \sqrt{\frac{3kT}{M}}$

= $\sqrt{\frac{3 \times 8.314 J/mol K \times 309.92 K}{0.028 kg/mol}}$

= 524.5 m/s

Therefore, $v_{rms}$ speed for nitrogen is 524.5 m/s.

3 0

3 years ago