CHEMISTRY HIGH SCHOOL

Which elements can react to produce a molecular compound?(1) calcium and chlorine
(2) hydrogen and sulfur
(3) lithium and fluorine
(4) magnesium and oxygen

Answers

Answer 1
Answer:

 The  elements that can react  to produce a molecular  compound is  hydrogen  and sulfur

Explanation

  • A  molecular compound is   formed  when two or more atoms join by  sharing  electrons through  a  covalent  bond.  
  • Sharing of atoms  occurs  mainly  between non metals.

  • Hydrogen ( a non metal)  and sulfur(a non metal) react to form  a molecular compound  by sharing electron among themselves.
  • 2 hydrogen  atom   bond  with 1 atom sulfur  to form hydrogen sulfide.
Answer 2
Answer:

\boxed{\left( 3 \right){\text{ Hydrogen and sulfur}}} can react to produce a molecular compound.

Further Explanation:

Covalent or molecular bond is formed when two or more non-metals share electrons between them. Such electron pairs are called bonding or shared pairs. The compounds formed as a result of these bonds are called covalent or molecular compounds.

Covalent bonds can be a polar covalent or nonpolar covalent bond. The bonds formed as a result of electron sharing between the atoms having some electronegativity difference between them are polar covalent bonds. HCl shows such type of bonding in it. The bonds formed when electrons are shared between the bonded atoms and these have no or slight difference in their electronegativities are called nonpolar covalent bonds. The bonds present in a \text{CH}_4 molecule are nonpolar covalent bonds.

Another type of bonding that occurs due to the complete transfer of electrons from one atom to the other is called ionic bonding. Such a process includes the formation of charged species called ions. Ions can have positive or negative charges on them. The charged species having a positive charge are cations while those having negative charges are anions.

(1) Calcium and chlorine

Calcium belongs to group 2A of the periodic table and is highly electropositive in nature. So it loses two electrons and forms \text{Ca}^(2+). Chlorine is highly electronegative in nature so two chlorine atoms accept the electrons donated by calcium and forms \text{Cl}^- ions. Therefore \text{CaCl}_2 is formed which is an ionic compound.

(2) Hydrogen and sulfur

Both these atoms are nonmetals. So they share electrons with each other and as a result, a covalent or molecular compound is formed.

(3) Lithium and fluorine

Lithium belongs to group 1A of the periodic table and is highly electropositive in nature. So it loses an electron to form \text{Li}^+. Fluorine is highly electronegative in nature and therefore it accepts the electrons donated by lithium and forms \text{F}^-. Therefore LiF is formed which is an ionic compound.

(4) Magnesium and oxygen

Magnesium belongs to group 2A of the periodic table and is highly electropositive in nature. So it loses two electrons and forms {\text{M}}{{\text{g}}^(2 + )}. Oxygen is highly electronegative in nature so it accepts the electrons donated by magnesium and forms {{\text{O}}^(2 - )}. This results in the formation of MgO which is an ionic compound.

Therefore a molecular compound is formed when hydrogen and sulfur react with each other.

Learn more:

  1. What is a typical characteristic of an ionic compound? brainly.com/question/6071838
  2. 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: covalent bond, molecular bond, cations, anions, calcium, chlorine, hydrogen, sulfur, lithium, fluorine, magnesium, oxygen, molecular compound, ionic compound.

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Answers

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Explanation:Test

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Answers

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Explanation:

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Answers

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Answers

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Answers

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