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Identify that a covalent bond occurs when two atoms share a pair of electrons, resulting in electronic configurations similar to noble gases.

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Cambridge IGCSE ChemistryAtoms, elements and compoundsCore content

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Identify that a covalent bond occurs when two atoms share a pair of electrons, resulting in electronic configurations similar to noble gases

This point belongs to Simple molecules and covalent bonds, especially Simple molecules and covalent bonds outcomes.
You need to be able to identify that a covalent bond occurs when two atoms share a pair of electrons, resulting in electronic configurations similar to noble gases.
The key ideas to know are State.
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State

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Paper 3 structured question: Simple molecules and covalent bonds

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Covalent Bonding

Covalent bonds are formed when two nonmetal atoms share pairs of electrons. This sharing allows each atom to attain a stable electronic configuration similar to that of noble gases.

a
State the definition of a covalent bond.
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Related learning objectives

Explain how covalent bonds are formed in simple molecules such as H₂, CH₄, H₂O, I₂, NH₃, and CCl₄, using dot-and-cross diagrams to illustrate their electronic configurations.
Simple molecules and covalent bonds outcomes
Discuss the properties of simple molecular compounds in relation to their structure and bonding, focusing on (a) their low melting and boiling points and (b) their poor electrical conductivity.
Simple molecules and covalent bonds outcomes
Illustrate the formation of covalent bonds in simple molecules such as CH₃OH, C₂H₄, O₂, CO₂, and N₂, using dot-and-cross diagrams to represent their electronic configurations.
Simple molecules and covalent bonds outcomes
Clarify the properties of simple molecular compounds in terms of their structure and bonding, explaining (a) low melting and boiling points due to weak intermolecular forces and (b) poor electrical conductivity.
Simple molecules and covalent bonds outcomes

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