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I) Write two differences between metals and non-metals.​

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  • Majority elements in the periodic table are metals. This includes alkali metals, transition metals, lanthanides, actinides and alkaline EARTH metals. Metals are separated by nonmetals on a periodic table through a zigzag line STARTING from carbon, till radon. The elements between the two are phosphorus, selenium and iodine.

  • Very few elements in the periodic table are non-metals. These are present on the right-hand side in the periodic table. Elements that come under non-metals are sulphur, carbon, all HALOGENS, phosphorus, hydrogen, OXYGEN, selenium, nitrogen and NOBLE gases.

In the periodic table, non-metals are located left of the halogens and to the right of the metalloids. Since noble gases and halogens are also non-metals, these elements are often referred to as non-metals.

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