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
Andreas93 [3]
3 years ago
8

Which pair of elements will form a covalent bond?

Chemistry
2 answers:
Dominik [7]3 years ago
7 0

Answer: Option (A) is the correct answer.

Explanation:

A covalent bond is formed when there occurs sharing of electrons between atoms.

For example, in hydrogen atom there is one electron in its orbit and in a chlorine atom there is 7 valence electron. So, in order to attain stability both hydrogen and chlorine share electrons when they come close to each other.

Whereas except hydrogen and chlorine rest of the given atoms will form ionic bond, that is, bond formed by transfer of electrons.

Thus, we can conclude that a pair of hydrogen and chlorine will form a covalent bond.

I am Lyosha [343]3 years ago
5 0

\boxed{{\text{A}}{\text{. hydrogen and chlorine}}} will form a covalent bond.

Further Explanation:

The bond that is formed by the mutual sharing of electrons between the bonded atoms is called a covalent bond. It is also known as a molecular bond. Covalent compounds are those compounds which are formed by the electron sharing between two or more non-metals.

Following are some of the properties of covalent compounds:  

1. These are brittle solids.

2. Low melting and boiling points.

3. Poor conductors of heat and electricity.

4. Low enthalpy of fusion.

Boron trichloride \left( {{\text{BC}}{{\text{l}}_3}} \right), silicon dioxide   \left( {{\text{Si}}{{\text{O}}_2}} \right), and xenon hexafluoride  \left( {{\text{Xe}}{{\text{F}}_{\text{6}}}} \right) are some examples of covalent compounds.

Ionic bond results from the interaction of a metal with a non-metal. Metal atom loses electron by virtue of its low ionization energy and forms a cation. This electron is gained by the non-metal atom and an anion is formed.

Following are some of the properties of ionic compounds:  

1. These are hard solids.

2. High melting and boiling points.

3. Good conductors of heat and electricity.

4. High enthalpy of fusion.

Sodium chloride (NaCl), potassium chloride (KCl) and barium oxide (BaO) are some of the examples of ionic compounds.

(A) Both hydrogen and chlorine are non-metals and the bond formed between two non-metals is a covalent bond. So hydrogen and chlorine will form covalent bonds with each other and the resulting compound HCl will be covalent compound.

(B) Sodium is metal while chlorine is a non-metal. So ionic bond will be formed by their interaction and the compound NaCl will be an ionic compound.

(C) Copper is metal while bromine is a non-metal. So ionic bond will be formed by their interaction and the compound CuBr will be an ionic compound.

(D)  Zinc is metal while bromine is a non-metal. So ionic bond will be formed by their interaction and the compound ZnBr will be an ionic compound.

So covalent bond will only be formed by hydrogen and chlorine.

Learn more:

1. Identification of ionic bonding: brainly.com/question/1603987

2. The main purpose of conducting experiments: brainly.com/question/5096428

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Ionic and covalent compounds

Keywords: covalent compounds. chlorine, hydrogen, sodium, copper, zinc, metal, non-metal, cation, anion, mutual sharing, molecular bond, hard, brittle, enthalpy of fusion, heat, electricity, conductors, boiling points.

You might be interested in
Strontium nitrate, Sr(NO3)2, is used in fireworks to produce brilliant red colors, Suppose we need to prepare 366.6 ml. of 0.115
natulia [17]

Answer:

\boxed{\text{8.91 g}}

Explanation:

1. Calculate the moles of Sr(NO₃)₂

n = \text{366 mL} \times \dfrac{\text{0.115 mmol}}{\text{1 mL}}= \text{42.09 mmol}

2. Calculate the mass of SrNO₃)₂

m = \text{42.09 mmol} \times \dfrac{\text{211.63 mg}}{\text{1 mol}}= \text{8910 mg} = \text{8.91 g}\\\text{The mass of strontium nitrate required is }\boxed{\textbf{8.91 g}}

3 0
3 years ago
What is the number of copper atom in one naira coin which weight is 7.3g a sum of the material is 86%
Step2247 [10]

Answer:

5.9x10²² atoms of Cu are in one naira coin

Explanation:

To solve this question we need to find the mass of Copper. Then, using its molar mass (Cu = 63.546g/mol) we must find the moles of Cu and its atoms using Avogadro's number:

<em>Mass Cu:</em>

7.3g * 86% = 6.278g is the mass of Cu.

<em>Moles Cu:</em>

6.278g * (1mol / 63.546g) = 0.099moles Cu

<em>Atoms Cu:</em>

0.099moles Cu * (6.022x10²³atoms / 1mol) =

<h3>5.9x10²² atoms of Cu are in one naira coin</h3>
4 0
2 years ago
N2 (g) + 2O2(g) = 2NO2 (g) ΔH = 66.4 kJ 2NO (g) + O2 (g) = 2NO2 (g) ΔH = -114.2 kJ the enthalpy of the reaction of the nitrogen
RSB [31]

Answer:

ΔH  = 180.6 kJ

Explanation:

Given that:

N2 (g) + 2O2(g) = 2NO2 (g)           ΔH = 66.4 kJ

<u>2NO (g) + O2 (g) = 2NO2 (g)         ΔH = -114.2 kJ                     </u>

N2 (g) + O2 (g) = 2NO (g)              ΔH  = ????

The subtraction of both equations would yield the unknown ΔH , therefore:

ΔH = 66.4 - ( - 114.2 kJ)

ΔH  = 180.6 kJ

3 0
3 years ago
Read 2 more answers
CO is a primary pollutant.
Anuta_ua [19.1K]

True

Carbon monoxide is a primary pollutant which no odor results from incomplete combustion of fuel. The man sources are gasoline and burning of biomass.

Depending on the source of emission, pollutants can be classified into two groups that is primary and secondary pollutants.

A primary pollutant is emitted in the atmosphere directly from a source. It can be either natural sch as volcanic eruptions, sandstorms or man-made that is due to industrial and vehicle emissions.  Examples of primary pollutants are nitrogen oxides, carbon monoxide and particulate matter.

Secondary pollutant is due to interactions between primary and secondary pollutants. These can be chemical or physical interactions. Examples are photo-chemical oxidants and secondary particulate matter.

Therefore, carbon monoxide CO is a primary pollutant.





7 0
3 years ago
Read 2 more answers
HELP!! URGENT ASAP!! WILL GIVE BRAINLIEST TO FASTEST ANSWER!!
Shalnov [3]

Answer:

This shoes the soda lime defusing to limewater turning into germinating seeding which defuses back to limewater

Explanation:

5 0
3 years ago
Other questions:
  • The chief function of muscles is _____.<br> contraction<br> absorption<br> excretion<br> protection
    15·2 answers
  • Carbon tetrachloride, CCl₄, is a solvent that was once used in large quantities in dry cleaning. Because it is a dense liquid th
    5·1 answer
  • How is enthalpy used to predict whether a reaction is endothermic or exothermic?
    5·2 answers
  • What is the definition of a "saturated solution"?
    12·1 answer
  • What do SPF sunscreen and ozone in the earths atmosphere do
    14·1 answer
  • What is the pH if 1mL of 0.1M HCl is added to 99mL of pure water?
    5·1 answer
  • (please help ;-; 30 points)This is a diagram developed by Ejnar Hertzprung and Henry Russell that shows how the magnitude, tempe
    13·1 answer
  • A student made peanut butter bars by pressing a layer of graham cracker crumbs into a baking pan. Next, the student added a laye
    13·2 answers
  • The vapor pressure of ethanol, CH3CH2OH, at 35.0 °C is 13.67 kPa. If 2.03 g of ethanol is enclosed in a 2.50 L container, how mu
    10·1 answer
  • WHAT IS PRECIPITATION REACTION​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!