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spørsmålet		svaret
What does a dot and cross diagram show? begynn å lære		The arrangement and transfer of outer-shell electrons.
Why are brackets used around ions in dot and cross diagrams? begynn å lære		To show they are charged ions.
Explain how sodium chloride forms. begynn å lære		Sodium transfers one electron to chlorine. Sodium becomes Na⁺ and chlorine becomes Cl⁻. The oppositely charged ions attract, forming an ionic bond.
Explain why magnesium forms Mg²⁺ ions. begynn å lære		Magnesium loses two electrons to achieve a full outer shell.
What does each line in a displayed formula represent? begynn å lære		One shared pair of electrons.
What does a displayed formula show? begynn å lære		Atoms and covalent bonds as lines.

Chemistry - Dot & Cross Diagram