All categories

3 years ago

Which of these are ionic compounds? Check all that apply.

Chemistry

2 answers:

WARRIOR [948]3 years ago

6 0

$\text{NH}_4$ , KF and MgO are ionic compounds.

Further Explanation:

Covalent bond

The type of bond that includes the sharing of electron pairs between the constituent atoms in a compound is known as a covalent bond. The electron pairs are therefore called bonding or shared pairs.

Ionic bond

The force of interaction between a positively and a negatively charged species is termed as an ionic bond. These charged species are known as ions. Cations are the species formed when there occurs a loss of electrons by the neutral atom whereas anions result from the gain or addition of electrons to the uncharged atom.

Electronegativity difference $(\Delta\text{EN})$ is a key factor in predicting whether a bond is polar or nonpolar. If $\Delta\text{EN}$ is less than 0.4, the bond is a nonpolar covalent bond. If $\Delta\text{EN}$ is between 0.4 and 1.7, the bond is a polar covalent bond. If $\Delta\text{EN}$ comes out to be greater than 1.7, the bond is ionic.

$\text{NH}_4\text{Cl}$

In this molecule, the constituent particles are ${\text{NH}}_4^ +$ and $\text{Cl}^-$ ions. There is a formation of an ionic bond between the two and therefore $\text{NH}_4\text{Cl}$ is an ionic compound.

$\text{SO}_2$

Here, both the constituents are nonmetals so the compound is a covalent compound.

FCl

The electronegativity of fluorine is 4.0 while that of chlorine is 3.0 so their electronegativity difference in FCl comes out to be 1.0 and therefore this molecule is a polar covalent compound.

Here, K is an electropositive metal so it loses an electron that is gained by electronegative F atom, resulting in the formation of an ionic bond between the two. So KF is an ionic compound.

$\text{NH}_3$

Here, nitrogen and hydrogen are the constituent particles of the compound and both are nonmetals so $\text{NH}_3$ is a covalent compound.

MgO

Here, magnesium acts as metal and forms cation by the removal of an electron from it. Oxygen, being electronegative, accepts this electron and forms an anion. The interaction between $\text{mg}^{2+}$ and $\text{O}^{2-}$ ions is an ionic bond so MgO is an ionic compound.

Therefore $\text{NH}_4$ , KF and MgO are ionic compounds.

Learn more:

What is a typical characteristic of an ionic compound? brainly.com/question/6071838
What type of bond exists between phosphorus and chlorine? brainly.com/question/81715

Answer details:

Grade: High School

Chapter: Ionic and covalent compounds

Subject: Chemistry

Keywords: ionic bond, covalent bond, nitrogen, hydrogen, NH4Cl, MgO, KF, FCl, SO2, NH3.

SIZIF [17.4K]3 years ago

5 0

I think the correct answers from the choices listed above are the first, third and the last option. Ionic compounds are compounds that dissociates into ions when in aqueous solution. From the list, NH4Cl, KF and MgO are the ionic compounds. Hope this answers the question.

You might be interested in

One kilogram of water at 100 0C is cooled reversibly to 15 0C. Compute the change in entropy. Specific heat of water is 4190 J/K

mina [271]

Answer:

The change in entropy is -1083.112 joules per kilogram-Kelvin.

Explanation:

If the water is cooled reversibly with no phase changes, then there is no entropy generation during the entire process. By the Second Law of Thermodynamics, we represent the change of entropy ( $s_{2} - s_{1}$ ), in joules per gram-Kelvin, by the following model:

$s_{2} - s_{1} = \int\limits^{T_{2}}_{T_{1}} {\frac{dQ}{T} }$

$s_{2} - s_{1} = m\cdot c_{w} \cdot \int\limits^{T_{2}}_{T_{1}} {\frac{dT}{T} }$

$s_{2} - s_{1} = m\cdot c_{w} \cdot \ln \frac{T_{2}}{T_{1}}$ (1)

Where:

$m$ - Mass, in kilograms.

$c_{w}$ - Specific heat of water, in joules per kilogram-Kelvin.

$T_{1}$ , $T_{2}$ - Initial and final temperatures of water, in Kelvin.

If we know that $m = 1\,kg$ , $c_{w} = 4190\,\frac{J}{kg\cdot K}$ , $T_{1} = 373.15\,K$ and $T_{2} = 288.15\,K$ , then the change in entropy for the entire process is:

$s_{2} - s_{1} = (1\,kg) \cdot \left(4190\,\frac{J}{kg\cdot K} \right)\cdot \ln \frac{288.15\,K}{373.15\,K}$

$s_{2} - s_{1} = -1083.112\,\frac{J}{kg\cdot K}$

The change in entropy is -1083.112 joules per kilogram-Kelvin.

7 0

3 years ago

HELP FAST 75 PTS Calculate the amount of heat needed to melt 35.0 g of ice at 0 ºC. must show work

victus00 [196]

Answer:

It takes 12,000 Joules of energy to melt 35 grams of ice at 0 °C

Explanation:

Good Luck!

7 0

2 years ago

Bonds between metals and nonmetals tend to be ionic, but bonds between nonmetal atoms tend to be covalent.

I am Lyosha [343]

O i get it it does not stik on metal eater way

5 0

3 years ago

Read 2 more answers

The graph shows the reaction pathway for the reaction Q + R N + M. Interpret the graph by describing what each of the letters (A

Vladimir [108]

Answer: The reaction is exothermic reaction as the energy of products is less than the energy of reactants.

Explanation: Exothermic reactions are defined as the reactions in which energy of the product is less than the energy of the reactants. The total energy is released in the form of heat and $\Delta H$ for the reaction comes out to be negative.

Labeling of the parts in the diagram:

A represents the activation energy which is the energy required by reactants to cross the energy barrier to get converted to products.

E represents the potential energy of the reactants.

B represents the activated complex.

D represents the potential energy of the products.

C represents the total enthalpy change of the reaction, which comes out to be negative for exothermic reactions.

$\Delta H=E_P-E_R$

7 0

3 years ago

Read 2 more answers

A change in which property of light will have no effect on whether or not the photoelectric effect occurs?

lorasvet [3.4K]

Answer:

intensity

Explanation:

Intensity has no affect on whether or not the photoelectric effect occurs. The determining property is frequency and since frequency and wavelength are inversely proportional, wavelength matters as well

3 0

3 years ago