Predict position of elements with valence configuration 4s2 4p5,3d10 4s1
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Solution
Element with valence configuration 4s2 4p5 is present in 4th period and group 17 s it has 7 electrons in its valence shell.
Element with valence configuration 3d10 4s1 is present in 4th period and d-block , group 11.