how would you justify the presence of 18th element in the 5th period of the periodic table
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how would you justify the presence of 18th element in the 5th period of the periodic table
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Explanation:
While filling 5th shell according to aufbau principle 5s,5p.4d filled so 2 +6 +10 =18 electrons or elements are present in 5th shell. We start the 5th period with 4s orbital. We can add 2 electrons in 4s.