Which of the following neutral elements has the same electron configuration as t

Question

Which of the following neutral elements has the same electron configuration as the bromide ion, Br?

D.krypton

Part A

Use the periodic table to determine the electron configuration for tin.

Express your answer in condensed form, in order of increasing orbital energy. For example, [He]2s22p2 would be entered as[He]2s^22p^2. Double digit superscripts must be enclosed in a set of {}. For example, [Ar]3d104s24p1 would be enetered as[Ar]3d^{10}4s^24p^1.

electron configuration of tin =

Part B

Write an electron configuration for iodine based on its position in the periodic table.

Express your answer in condensed form, in order of increasing orbital energy. For example, [He]2s22p2 would be entered as[He]2s^22p^2. Double digit superscripts must be enclosed in a set of {}. For example, [Ar]3d104s24p1 would be enetered as[Ar]3d^{10}4s^24p^1.

electron configuration of iodine =

Part C

Use the periodic table to write electron configurations for each element.

Al

Be

In

Zr

Express your answer in condensed form, in order of increasing orbital energy. For example, [He]2s22p2 would be entered as[He]2s^22p^2. Double digit superscripts must be enclosed in a set of {}. For example, [Ar]3d104s24p1 would be enetered as[Ar]3d^{10}4s^24p^1. Separate your answers with a comma.

electron configurations of each element are =

D.krypton

Explanation / Answer

1) answer : D) .krypton.

Br- = electron configuration = [Ar] 3d^{10} 4s^2 4p^6

Kr = electron configuration = [Ar] 3d^{10} 4s^2 4p^6

Part A :

electron configuration for tin = [Kr] 4d^{10} 5s^2 5p^2.

tin atomic number = 50

Part B :

electron configuration of iodine = [Kr] 4d^{10} 5s^2 5p^5

iodine atomic number = 53

Part C :

Al = 13 = [Ne] 3s^2 3p^1

Be = 4 = [He] 2s^2

In = 49 = [Kr] 4d^10 5s^2 5p^1

Zr = 40 = [Kr] 4d^2 5s^2

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