Can any one explain how to make an electron configuration please??;-; like this question:

Use the electron configuration notation of the following elements to the determine their group, period and block
((1s22s22p63s23p64s23d5))

1.Group 7,Period 4,d-block
2.Group 2,Period 4,s-block
3.Group 7,Period 3,d-block

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

Which elements are found in glucose, the product of photosynthesis? a. carbon, hydrogen, and oxygen b. carbon and hydrogen c. carbon, nitrogen, and oxygen d. hydrogen, nitrogen, and carbon

What happens after sound waves create vibrations in the ear?