$CATEGORY: Science - Khan Academy/4.Carbon and its Compounds/4.Carbon and its Compounds--Bonding in Carbon-The covalent Bond

//Multiple Choice

How many electrons are shared in a single covalent bond? {
    ~1
    =2
    ~4
    ~6
}

Which of the following molecules has a single covalent bond? {
    ~O₂
    ~N₂
    =H₂
    ~CO₂
}

In the Lewis dot structure of H₂, how many electrons are involved in bonding? {
    ~1
    =2
    ~4
    ~6
}

Which element forms a single covalent bond with hydrogen in HCl? {
    ~Oxygen
    ~Nitrogen
    =Chlorine
    ~Carbon
}

What is the total number of electrons involved in the single covalent bond between two hydrogen atoms in H₂? {
    ~1
    =2
    ~4
    ~6
}

Which of the following pairs of atoms would form a single covalent bond? {
    ~H and O
    =H and H
    ~O and O
    ~N and N
}

In the Lewis dot structure of H₂O, the oxygen atom forms single covalent bonds with ______. {
    =Two hydrogen atoms
    ~One hydrogen atom
    ~Two oxygen atoms
    ~Two nitrogen atoms
}

How many lone pairs of electrons are present on the oxygen atom in the Lewis dot structure of H₂O? {
    ~1
    =2
    ~3
    ~4
}

Which of the following molecules contains a single covalent bond between carbon and hydrogen? {
    =CH₄
    ~C₂H₂
    ~C₆H₆
    ~CO₂
}

In the Lewis dot structure of methane (CH₄), how many single covalent bonds are formed between carbon and hydrogen? {
    ~1
    ~2
    ~3
    =4
}

//True or False

A single covalent bond involves the sharing of one pair of electrons. {T}

In a molecule of H₂, each hydrogen atom shares two electrons. {T}

In a single covalent bond, two atoms share four electrons. {F}

Methane (CH₄) has four single covalent bonds between carbon and hydrogen. {T}

The bond between two chlorine atoms in Cl₂ is a double covalent bond. {F}

A single covalent bond is formed by the overlap of two orbitals, each containing one electron. {T}

In a molecule of HCl, the hydrogen atom shares two electrons with chlorine. {F}

In a single covalent bond, both atoms contribute one electron to the bond. {T}

In the Lewis structure of H₂O, the oxygen atom forms two single covalent bonds with hydrogen atoms. {T}

A single covalent bond can only form between two non-metal atoms. {T}

//Fill in the blanks

In a single covalent bond, each atom shares ______ electron(s). {
    ~1
    =2
    ~4
    ~6
}

The molecule H₂ has a ______ covalent bond. {
    =Single
    ~Double
    ~Triple
    ~Quadruple
}

In the Lewis dot structure of H₂, each hydrogen atom has ______ valence electron(s) involved in bonding. {
    =1
    ~2
    ~3
    ~4
}

In a single covalent bond, the number of electrons shared between two atoms is ______. {
    ~1
    =2
    ~4
    ~6
}

The Lewis dot structure of methane (CH₄) shows ______ single covalent bonds between carbon and hydrogen. {
    ~1
    ~2
    ~3
    =4
}

The bond between hydrogen and chlorine in HCl is a ______ covalent bond. {
    =Single
    ~Double
    ~Triple
    ~Quadruple
}

In the Lewis dot structure of H₂O, oxygen forms ______ single covalent bonds with hydrogen. {
    ~1
    =2
    ~3
    ~4
}

In the molecule H₂, the total number of electrons shared is ______. {
    ~1
    =2
    ~3
    ~4
}

In a single covalent bond, the two atoms involved share ______ electrons. {
    ~1
    =2
    ~3
    ~4
}

The single covalent bond between hydrogen atoms in H₂ satisfies the ______ rule for hydrogen. {
    ~Octet
    =Duplet
    ~Triplet
    ~Hexet
}






//Numericals

How many electrons are shared in a single covalent bond? {
    ~1
    =2
    ~4
    ~6
}

How many covalent bonds are formed between two hydrogen atoms in H₂? {
    =1
    ~2
    ~3
    ~4
}

How many valence electrons are involved in the formation of a single covalent bond between two hydrogen atoms? {
    ~1
    =2
    ~3
    ~4
}

How many covalent bonds are present in a molecule of methane (CH₄)? {
    ~1
    ~2
    ~3
    =4
}

In the Lewis structure of methane (CH₄), how many electrons are shared between carbon and hydrogen? {
    ~2
    =4
    ~6
    ~8
}

How many lone pairs of electrons are present on the carbon atom in methane (CH₄)? {
    =0
    ~1
    ~2
    ~3
}

How many electrons are shared in a single covalent bond between hydrogen and chlorine in HCl? {
    ~1
    =2
    ~3
    ~4
}

How many valence electrons are used in the formation of a single covalent bond between hydrogen and chlorine in HCl? {
    ~1
    =2
    ~4
    ~6
}

In the Lewis structure of H₂O, how many single covalent bonds are formed between oxygen and hydrogen? {
    ~1
    =2
    ~3
    ~4
}

How many electrons are shared in a single covalent bond between two chlorine atoms in Cl₂? {
    ~1
    =2
    ~4
    ~6
}

//Match the following

Match the following items from Column A with their correct corresponding options from Column B\:
{
=H2 molecule -> Single covalent bond
=HCl molecule -> Single covalent bond 
=CH4 molecule -> Four single covalent bond 
=O2 molecule -> Double covalent bond
}


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