Atoms can be divided more so thats not true. atoms from the same element arent all nesacarly identical because of isotopes
Answer:
[Ar] 3d10 4s2 4p3 is shorthand, 1s22s22p63s23p63d104s24p3 long hang
Explanation:
The shorthand is made using the lowest & closest noble gas, and picking up where it leaves off as follows, and longhand is made from a followed pattern you can easily find
Question 1 answer: A
Question 2 answer: H
Question 3 answer: J
Question 4 answer: T