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Write the name and deduce the atomic num...

Write the name and deduce the atomic numbers of the following atoms :
(i) The third alkali metal.
(ii) Second transition element.
(iii) The fourth noble gas.
(iv) Fourth element in the second period.

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`(i), K, 19 (ii) Ti, 22 (iii) Kr, 36 (iv) C, 6.`
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MODERN PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -PRACTICE PROBLEMS
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