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Question:

what is the quantum numbers for these elements?

zinc, arsenic, calcium, potassium, argon, aluminum, bromine, carbon, and oxygen? thank you a lot.

Answer:

(For each element, they're are different combinations of quantum numbers that you could choose for each electron, it is important to follow the rulesThe one's shown are arbitrary choices.) Zn: 1st e (1, 0, 0, +1/2) 2nd (1, 0, 0, -1/2) 3rd (2, 0, 0, +1/2) 4th (2, 0, 0, -1/2) 5th (2, 1, -1, +1/2) 6th (2, 1, 0, +1/2) 7th (2, 1, 1, +1/2) 8th (2, 1, -1, -1/2) 9th (2, 1, 0, -1/2) 10th (2, 1, 1, -1/2) 11th (3, 0, 0, +1/2) 12th (3, 0, 0, -1/2) 13th (3, 1, -1, +1/2) 14th (3, 1, 0, +1/2) 15th (3, 1, 1, +1/2) 16th (3, 1, -1, -1/2) 17th (3, 1, 0, -1/2) 18th (3, 1, 1, -1/2) 19th (4, 0, 0, +1/2) 20th (4, 0, 0, -1/2) 21st (3, 2, -2, +1/2) 22nd (3, 2, -1, +1/2) 23rd (3, 2, 0, +1/2) 24th (3, 2, 1, +1/2) 25th (3, 2, 2, +1/2) 26th (3, 2, -2, -1/2) 27th (3, 2, -1, -1/2) 28th (3, 2, 0, -1/2) 29th (3, 2, 1, -1/2) 30th (3, 2, 2, -1/2) For arsenic, the same as zinc except for 3 more electrons: 31st (4, 1, -1, +1/2) 32nd (4, 1, 0, +1/2) 33rd (4, 1, 1, +1/2) For calcium, look at zincSame as the first 20 electronsFor potassium, look at zincSame as the first 19 electrons For argon, look at zincSame as the first 18 electrons For aluminum, same as zincSame as the first 13 electronsFor bromine, same as zinc and the arsenicExcept there are two more electrons: 34th (4, 1, -1, -1/2) 35th (4, 1, 0, -1/2) For carbon, look at zincSame as the first 6 electrons For oxygen, look at zincSame as the first 8 electronsEven though I have given you all the answers, it is best that you understand how to assign quantum numbers to electronsOnce you get the rules, its easy to assign quantum numbers Hope this helps.

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