→ Chemistry - Dot & Cross Diagram → Оқуды бастаңыз / MP3 флэш-карталарын жүктеу

сұрақ		жауап
What does a dot and cross diagram show? оқуды бастаңыз		The arrangement and transfer of outer-shell electrons.
Why are brackets used around ions in dot and cross diagrams? оқуды бастаңыз		To show they are charged ions.
Explain how sodium chloride forms. оқуды бастаңыз		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. оқуды бастаңыз		Magnesium loses two electrons to achieve a full outer shell.
What does each line in a displayed formula represent? оқуды бастаңыз		One shared pair of electrons.
What does a displayed formula show? оқуды бастаңыз		Atoms and covalent bonds as lines.

Chemistry - Dot & Cross Diagram