Question

7.
There are 7 electrons in the third shell of an element
a. Write its subshell electronic configuration,
b. Find the group and block of this element

Answer 1

Answer:

Pencil: I'm sorry eraser.

Eraser: For what? Pencil: I'm sorry because whenever I make a mistake, you're always there to erase and you get hurt. Eraser: So what, I was made to erase every mistake you made.

eraser is our parents

Answer 2

Answer:

a. 1s 22s 22p 63s 23p5

b. halogens

Explanation:

A neutral chlorine atom has 17 electrons. Two electrons can go into the 1s subshell, 2 can go into the 2s subshell, and 6 can go into the 2p subshell. That leaves 7 electrons. ... Thus, the electron configuration of neutral chlorine atoms is 1s 22s 22p 63s 23p5