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5Points Quiz

In a covalent bond, the shared electrons are located where?

        A.  With the atom whose valence is the highest principal quantum number

        B.  Between the two bonded atoms

        C.  Closer to the nuclei of both atoms

        D.  In both atoms

Answer: B

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Atoms forming the covalent bond are held together by ______________.

        A.  The strong covalent bond

        B.  Sea of electrons cloud

        C.  Attractive force between electron pair shared by two atoms forming the covalent bond and nuclei of both atoms

        D.  van der Waals forces

Answer: C

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Why are non-metals bonded by covalent bond ?

        A.  They want to create new chemicals

        B.  They want full electron shells

        C.  Because it is their nature

        D.  Because they are attracted to one another

Answer: B

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Nitrogen has an electron configuration of 2,8,5 chlorine has an electron configuration of 2,8,7, How many electrons do both elements need to get full outer shells.

        A.  Nitrogen needs 6; chlorine needs 3

        B.  Nitrogen needs 3; chlorine needs 2

        C.  Nitrogen needs 3; chlorine needs 1

        D.  Nitrogen needs 6; chlorine needs 2

Answer: C

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Comment on the ease of vaporisation on heating of covalent molecules or compounds.

        A.  The electrical attractive forces between individual molecules are weak, hence bonds easily break up on heating leading to lesser melting and boiling points compared to ionic compounds

        B.  The electrical attractive forces between individual molecules are very strong, hence a very high temperature is required, this leads to high melting and boiling points

        C.  None of the above

        D.  All of the above

Answer: A

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Covalent compounds are usually _____.

        A.  Either gases or liquids

        B.  Liquids

        C.  Either gases, liquids or solids

        D.  Gases

Answer: C

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The ultimate reason why atoms form ionic bond and covalent bond is __________.

        A.  Because they want to form compounds

        B.  Because they want to be surrounded by a complete shell of electrons

        C.  Because they want to form molecules

        D.  Because they want to form both compounds and molecules

Answer: B

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Metallic bond differ from ionic and covalent bonds in that __________.

        A.  The sea of electrons in the metallic lattice belong to a specific metal atom and move easily throughout the lattice as against ionic solids or covalent ones where the electrons are not associated with either a particular atom or a particular pair of atoms

        B.  Metallic bond makes metals rigid whereas ionic or covalent bond can make a compound gaseous, liquid or solid

        C.  The sea of electrons in the metallic lattice do not belong to a specific metal atom and move easily throughout the lattice as against ionic solids or covalent ones where the electrons are rigidly associated with either a particular atom or a particular pair of atoms

        D.  Metallic bond is formed only between metals whereas ionic and covalent bonds can be formed between metals and non-metals

Answer: C

For More Quiz Questions click here to download Global Quiz on Google PlayStore


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