(Answered) 1- according to the showed electron configuration answer

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1- According to the showed electron configuration, answer for:

1s²
2s² 2p⁶
3s² 3p⁶ 3d10
4s² 4p⁶ 4,110
5s² 5p²

a- How many shells...?
b- How many orbitals...?
c- What is the Atomic Number of this element...?
d- How many electrons...?
e- How many electrons in the last shell...?

2- For element Ar, answer the following questions:
a- How many shells according its electron configuration?
b- How many electrons in the last shell?
c- How many neutrons in the nucleus?

3- What do you consider the main contribution in the description of atomic structure in the atomic model of Rutherford (Planetary model)? Please, argue your answer.

4- According to you, what do you consider the main contribution of this Course in your professional formation?

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