Calculate zeff for a 3d electron in a copper atom, cu.
Answers
Answer:
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Answer:
7.85
Explanation:
Z is the nuclear charge, which is equal to the total number of protons in the nucleus. Use the periodic table to determine the number of protons in a copper atom.
To determine the value for S, start by writing out the electron configuration for the atom. The electron configuration for Cu is 1s22s22p63s23p63d104s1 . According to Slater's rules the subshells can be grouped as follows: ( 1s2 ), ( 2s2 , 2p6 ), ( 3s2 , 3p6 ), ( 3d10 ), ( 4s1 ).
In this case, the value of S is being determined for a 3d electron. When the designated electron is in an nd group, rules ii and iii remain the same, but rules iv and v are replaced by rule vi.
According to rule ii, electrons to the right of the (3d) grouping do not contribute to the value of S . According to rule vi, all electrons to the left of the 3d grouping, in this case (1s), (2s, 2p), (3s, 3p), contribute 1.00 each.