Which of the following is the most abundant metal on Earth's crust? (1) Magnesium (2) Iron (3) Copper (4) Aluminium

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Answer :

(4) Aluminium Explanation: Aluminum is the most abundant metal in the Earth's crust, and the third most abundant element therein, after oxygen and silicon. It makes up about 8% by weight of the Earth's solid surface. Earth's crust occupies less than 1% of Earth's volume Oxygen is 46.6%, Silicon 27.77%, Aluminum is 8.09% and iron is 5%.

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