1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
quester [9]
3 years ago
11

Which of the following molecules are ionic?

Chemistry
2 answers:
kkurt [141]3 years ago
6 0
1st one is E
2nd one is also E
Vaselesa [24]3 years ago
4 0

<u>Answer:</u>

<u>For A:</u> The correct answer is Option E.

<u>For B:</u> The correct answer is Option E.

<u>Explanation:</u>

  • <u>For A:</u>

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:

<u>Option A:</u>  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.

<u>Option B:</u>  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.

<u>Option C:</u>  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.

<u>Option D:</u>  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.

  • <u>For B:</u>

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.

<u>Option A:</u>  SO_2

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

Hence, it is a covalent compound.

<u>Option B:</u>  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.

<u>Option C:</u>  NO_2

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

Hence, it is a covalent compound.

<u>Option D:</u>  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.

You might be interested in
When is balance achieved between the forward and reverse reactions?
docker41 [41]

Equilibrium occurs when forward and reverse directions of a reversible reaction occur at the same rate so there is no overall change in the amounts of reactants and products.

8 0
3 years ago
0.10 M potassium chromate is slowly added to a solution containing 0.20 M AgNO3 and 0.20 M Ba(NO3)2. What is the Ag+ concentrati
erastova [34]

Answer:

[Ag^{+}]=4.2\times 10^{-2}M

Explanation:

Given:

[AgNO3] = 0.20 M

Ba(NO3)2 = 0.20 M

[K2CrO4] = 0.10 M

Ksp of Ag2CrO4 = 1.1 x 10^-12

Ksp of BaCrO4 = 1.1 x 10^-10

BaCrO_4 (s)\leftrightharpoons  Ba^{2+}(aq)\;+\;CrO_{4}^{2-}(aq)

Ksp=[Ba^{2+}][CrO_{4}^{2-}]

1.2\times 10^{-10}=(0.20)[CrO_{4}^{2-}]

[CrO_{4}^{2-}]=\frac{1.2\times 10^{-10}}{(0.20)}= 6.0\times 10^{-10}

Now,

Ag_{2}CrO_4(s) \leftrightharpoons  2Ag^{+}(aq)\;+\;CrO_{4}^{2-}(aq)

Ksp=[Ag^{+}]^{2}[CrO_{4}^{2-}]

1.1\times 10^{-12}=[Ag^{+}]^{2}](6.0\times 10^{-10})

[Ag^{+}]^{2}]=\frac{1.1\times 10^{-12}}{(6.0\times 10^{-10})}= 1.8\times 10^{-3}

[Ag^{+}]=\sqrt{1.8\times 10^{-3}}=4.2\times 10^{-2}M

So, BaCrO4 will start precipitating when [Ag+] is 4.2 x 1.2^-2 M

                       

7 0
3 years ago
20. You are approaching a downhill. Which configuration woulo
LenKa [72]

Answer: I think the answer is A

Explanation:

I’m sorry if I’m wrong.

4 0
2 years ago
In the compound h2s hydrogen has an oxidation number of 1+ and sulfur has an oxidation number of
elena-14-01-66 [18.8K]
Oxidation number is defined as the total number of electrons that are gained or lost by the atom to form a chemical bond. 
the oxidation number of the compound H₂S is 0.
the sum of the oxidation numbers of the individual elements should add up to the oxidation number of the compound. 

(oxidation number of H x 2 H ions) + oxidation number of S = 0
since we know the oxidation number of H, lets name the oxidation number of S = x
(+1 * 2 )+ (x) = 0
2 + x = 0
x = -2
oxidation number of S is -2
3 0
3 years ago
Read 2 more answers
A graduated cylinder has 20 ml (cm3) of water placed in it. An irregularly shaped rock is then dropped in the graduated cylinder
zepelin [54]

Answer:

Volume = 10 cm3

Density = 2.3g/cm3

Explanation:

volume:

30ml - 20ml = 10ml = 10cm3

density:

density = mass/volume

23/10

2.3g/cm3

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the correct name for the compound CoCl3?
    11·2 answers
  • Plz do #4 <br> Plz, plz, plzzzzzzz!!!!!
    11·1 answer
  • A 2.0 ml sample of a colorless solution, when treated with a few drops of 2 m hydrochloric acid, forms a white precipitate which
    6·1 answer
  • please help me I am begging you.. )))): PLEASE HELP ME ~~~~~~~~~~~~~~~~~~~~~~ A football player experiences acute pain in his kn
    9·2 answers
  • The reactants in a chemical reaction contain 900 J of chemical energy. The products of the reaction contain 9000 J of chemical e
    15·2 answers
  • I NEED HELP PLEASE! THIS IS HARD FOR ME!!
    9·1 answer
  • The type of response when a plant moves away from the stimulus
    8·1 answer
  • What is the concept of Dimensional Analysis?
    13·1 answer
  • An ion of oxygen- 16 contains 8 protons and has a 2- charge. How many electrons does it have?
    8·1 answer
  • What mass of aluminum must react with 100 g of copper (ii) phosphate? (10g)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!