Question: 1. How many inner, outer, and valence electrons are present in an atom of each of the following elements? (a) O (b) Sn (c)

1. How many inner, outer, and valence electrons are present in an

1. How many inner, outer, and valence electrons are present in an atom of each of the following elements? (a) O (b) Sn (c) Ca (d) Fe 2. Identify each element below, and give the symbols of the other elements in its group: (a) [Ar] 4s3d04p* (b) [Xe] 6s4f45d? 3. Arrange each set in order of increasing atomic size: (c) Cl, K, S (d) Mg, K. Ca 4. Rank the ions in each set in order of decreasing size, and explain your ranking: (a) Se2, s, 02 (b) Te2, Cs", I

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