The electronic structure 1 s 2 2 s 2 2 p 6 3 s 2 3 p

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15.The electronic structure 1s22s22p63s23p64s23d8refers to the ground state ofA) Kr B) Ni C) Fe
D) Pd 16.Which of the following elements has the largestatomic size?
D) Po 17.Which of the following elements has the largestfirst ionization energy?
D) Br18.Select the most acidiccompound from the following:
PbO 19.Which of the following atoms will be diamagnetic?A) Cr B) Fe C) Pt
D) Cd20.What is the correct order of decreasing size of the following ions?
2+
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