Question

question 2 0.2 pts electronic configuration helps us understand the ____ of an electron energy radiation color shape question 3 0.2 pts which row on the periodic table does the element with the configuration kr5s2 4d3 belong to? 3 2 4 5 question 4 0.2 pts the short hand electron configuration for arsenic (atomic# 33) is ar 3s2 3p3 as4s2 4p3 ar4s2 3d10 4p3 (kr)4s2 3d10 4p2

Explanation:

• Question 2: Electronic configuration is related to the distribution of electrons in different energy - levels. It helps in understanding the energy of an electron.
• Question 3: In the electron - configuration [Kr]5s24d3, the highest principal quantum number is 5, so the element belongs to the 5th row of the periodic table.
• Question 4: Arsenic (atomic number 33) has the electron - configuration [Ar]4s23d104p3. Argon (Ar) has 18 electrons, and adding 4s23d104p3 (15 more electrons) gives a total of 33 electrons.

Answer:

Question 2: A. energy
Question 3: D. 5
Question 4: C. [Ar]4s2 3d10 4p3