Which of the following is a Group 1 metal?

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Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

Which of the following is a Group 1 metal?

Explanation:
Group 1 metals are the alkali metals: they sit in the first column of the periodic table and have one electron in their outer shell, which makes them extremely reactive and capable of forming +1 ions. Potassium fits this pattern exactly, so it is a Group 1 metal. The others listed are not in that group: iron and copper are transition metals with different electronic structures and properties, and lead belongs to a different part of the periodic table. So potassium is the correct choice because it shares the defining feature of Group 1 elements.

Group 1 metals are the alkali metals: they sit in the first column of the periodic table and have one electron in their outer shell, which makes them extremely reactive and capable of forming +1 ions. Potassium fits this pattern exactly, so it is a Group 1 metal. The others listed are not in that group: iron and copper are transition metals with different electronic structures and properties, and lead belongs to a different part of the periodic table. So potassium is the correct choice because it shares the defining feature of Group 1 elements.

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