2.5 Covalent Bonding

O Level - Pure Chemistry

(a) describe the formation of a covalent bond by the sharing of a pair of electrons in order to gain the electronic configuration of a noble gas
(b) describe, using ‘dot-and-cross’ diagrams, the formation of covalent bonds between nonmetallic elements, e.g. H2; O2; H2O; CH4; CO2
(c) deduce the arrangement of electrons in other covalent molecules
(d) relate the physical properties (including electrical property) of covalent substances to their structure and bonding

O Level - Combined Chemistry

(a) describe the formation of a covalent bond by the sharing of a pair of electrons in order to gain the electronic configuration of a noble gas
(b) describe, using ‘dot and cross’ diagrams, the formation of covalent bonds between nonmetallic elements, e.g. H2, O2, H2O, CH4 and CO2
(c) deduce the arrangement of electrons in other covalent molecules
(d) relate the physical properties (including electrical property) of covalent substances to their structure and bonding

N(A) Level - Combined Chemistry

(a) describe the formation of a covalent bond by the sharing of a pair of electrons in order to gain the electronic configuration of a noble gas
(b) describe, using ‘dot and cross’ diagrams, the formation of covalent bonds between nonmetallic elements, e.g. H2; O2; H2O; CH4 and CO2
(c) deduce the arrangement of electrons in other covalent molecules
(d) relate the physical properties (including electrical property) of covalent substances to their structure and bonding

- Syllabuses from SEAB

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