CAIE IGCSE Chemistry Metallic to Non-Metallic Trend

Practise describing the decrease in metallic character from left to right across a period and using electron or reaction data to classify elements.

Exam points

state that metallic character decreases from left to right across a period
locate the strongest metallic character toward the lower left of the Periodic Table
use outer-electron or reaction evidence to order elements from metallic to non-metallic

[Maximum number: 1]

Which set of elements shows the change from metallic to non-metallic character across a period of the Periodic Table?

beryllium → magnesium → calcium

fluorine → bromine → iodine

oxygen → boron → lithium

sodium → silicon → chlorine

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