ln modern periodic table each period ends with
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Explanation:
Each period starts with an alkali metal and ends with an inert gas element. * The first period is a very short period with only two elements i.e., Hydrogen (H) & Helium (He). ok!!!!! end with Noble gases
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Periods: * Each period starts with an alkali metal and ends with an inert gas element. * The first period is a very short period with only two elements i.e., Hydrogen (H) & Helium (He). select this as brainliest answee
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