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In the modern periodic table calcium (atomic number 20) is surrounded by elements with atomic number 12,19,21and 38.which of these have physical and chemical properties resembling calcium..?​

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Answer:

In the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21 and 38. Which of these have physical and chemical properties resembling calcium. will resemble calcium as they all have same valence electrons and their chemical properties are also same

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