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kaitietrueman8823
12.09.2019 •
Chemistry
Iam working through the material in my books, and trying to understand this consept now, but if someone could me with these two questions i would be really greatful!
25. (3 points) describe what each letter and number in 4d^8 tells you.
a. the “4” tells you:
b. the “d” tells you :
c. the superscript 8 tells you:
26. (4 points) the ground state electron configurations below each contain an error. state the error in each and explain why the configuration is incorrect:
a. 1s^2 2s^2 2p^4 3s^2
b. 1s^2 2s^2 3s^2 3p^4
c. 1s^2 2s^2 2p^6 3s^4 3p^5
d. 1s^2 2s^2 2p^6 3s^2 3p^6 3d^2
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Ответ:
25.
a. energy level
b. orbital
c. number of electrons in that orbital
Energy level goes from 1 to 7
Orbitals are s, p, d and f
Maximum number of electrons are 2, 6, 10 and 14 for s, p, d and f.
26
a. is wrong because you need to fill an orbital before using the next, 2p allows 6 electrons and after only 4 it goes to 3s which is wrong
b. is wrong because is missing 2p. It goes from 2s to 3s
c. is wrong because 3s only allows 2 electrons and it has 4
d. is wrong because after 3p goes 4s and not 3d
Explanation:
To know the order you assign s, p, d and f a number (0,1,2 and 3 respectively).
1s 2s 2p 3s 3p 4s 3d 4p
using the number assigned to orbitals
1(0) 2(0) 2(1) 3(0) 3(1) 4(0) 3(2) 4(1)
now you sum them:
1 2 3 3 4 4 5 5
Ответ: