Covalent bonds are formed by the __________ of electrons between two atoms so that both can achieve a completely filled outermost shell.
Covalent bonds are formed by the sharing of electrons between two atoms so that both can achieve a completely filled outermost shell.
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- (a) Name three elements that have a single electron in their outermost shells.(b) Name two elements that have two electrons in their outermost shells. (c) Name three elements with completely filled outermost shells.
- What do we call those particles which are formed :(a) by the gain of electrons by atoms?(b) by the loss of electrons by atoms?
- Which element has:(a) two shells, both of which are completely filled with electrons? (b) the electronic configuration 2, 8, 2? (c) a total of three shells, with four electrons in its valence shell? (d) a total of two shells, with three electrons in its valence shell? (e) twice as many electrons in its second shell as its first shell?
- The electrons present in the outermost shell are called(a) valency electrons (b) octate electrons(c) duplet electrons (d) valence electron.
- Name :(a) three elements that have a single electron in their outermost shells.(b) two elements that have two electrons in their outermost shells.(c) three elements with filled outermost shells.
- Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g. hydrogen. After the formation of four bonds, carbon attains the electronic configuration of heliumneonargonkrypton
- State the number of electrons present in the outermost shell of the atoms of the following elements :(i) Neon (ii) Chlorine
- What is the name of the chemical bond formed:(a) By the sharing of electrons between two atoms?(b) By the transfer of electrons from one atom to another?
- In the atom of an element X, 6 electrons are present in the outermost shell. If it acquires noble gas configuration by accepting requisite number of electrons, then what would be the charge on the ion so formed?
- Ethane with molecular formula C2H6 has(a) 6 covalent bonds(b) 7 covalent bonds(c) 8 covalent bonds(d) 9 covalent bonds.
- Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of nitrogen, N2, is formed from two nitrogen atoms. What name is given to this type of bonding?
- Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of oxygen, O2, is formed from two oxygen atoms. What is the name given to this type of bonding?
- What is the maximum number of electrons which can be accommodated in the :(a) innermost shell of an atom?(b) outermost shell of an atom?
- Difference Between Ionic, Covalent and Metallic Bonds
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