Chemistry, 07.10.2019 05:30 abbydamaso5048

Which of the following molecules are ionic?
a. rbno3
b. na2so4
c. mgcl2
d. nai
e. all of the above

which of the following molecules are covalent?
a. so2
b. c2h2o
c. no2
d. sio2
e. all of the above

Answers: 1

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Answers

Answer from: tremainewoodley3030

For A: The correct answer is Option E.

For B: The correct answer is Option E.

Explanation:

For A:

Ionic compound is defined as the compound which is formed by complete transfer of electrons from one atom to another atom.

This bond is usually formed between a metal and a non-metal or a metal reacts with a polyatomic ion or a reaction between two polyatomic ions takes place.

For the given options:

Option A: RbNO_3

This compound is formed by the combination of $Rb^+\text{ and }NO_3^-$ ions. Rubidium is a metal and nitrate is a polyatomic ion

Hence, it is an ionic compound.

Option B: Na_2SO_4

This compound is formed by the combination of $Na^+\text{ and }SO_4^{2-}$ ions. Sodium is a metal and sulfate is a polyatomic ion

Hence, it is an ionic compound.

Option C: MgCl_2

This compound is formed by the combination of $Mg^{2+}\text{ and }Cl^-$ ions. Magnesium is a metal and chlorine is a non-metal

Hence, it is an ionic compound.

Option D: NaI

This compound is formed by the combination of $Na^+\text{ and }I^-$ ions. Sodium is a metal and iodine is a non-metal

Hence, it is an ionic compound.

Thus, the correct answer is Option E.

For B:

Covalent compound is defined as the compound which is formed when sharing of electrons takes place between the atoms. This is usually formed between two non-metals.

Option A: SO_2

This compound is formed by the combination of sulfur and oxygen atoms. Both are non-metals.

Hence, it is a covalent compound.

Option B: C_2H_2O

This compound is formed by the combination of carbon, hydrogen and oxygen atoms. All are non-metals.

Hence, it is a covalent compound.

Option C: NO_2

This compound is formed by the combination of nitrogen and oxygen atoms. Both are non-metals.

Hence, it is a covalent compound.

Option D: SiO_2

This compound is formed by the combination of silicon and oxygen atoms. Both are non-metals.

Hence, it is a covalent compound.

Thus, the correct answer is Option E.

Answer from: Quest

i believe it is 40–40–20%

explanation:

Answer from: Quest

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

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You know the right answer?

Which of the following molecules are ionic?
a. rbno3
b. na2so4
c. mgcl2
d....

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