Question #b3c29
4 Answers
Explanation:
The electron configuration of Aluminum is:
Explanation:
Atomic number is 13. The last noble gas with atomic number below 13 is Neon (atomic number 10).
Configuration of Neon is
Explanation:
The electron configuration for Aluminum is
Aluminum is found in the
The short hand or noble gas notation for this would use
The
Explanation:
For starters, grab a periodic table and look for aluminium,
This tells you that a neutral aluminium atom contains
As you know, electron configurations are written in accordance with the Aufbau Principle. The available empty orbitals in order of increasing energy look like this
Your goal now will be to start adding electrons to these orbitals. The first energy level contains a single orbital, so the first two electrons go in the
#"Al: " color(blue)(1s^2)#
You're now down to
#"Al: " color(blue)(1s^2) color(red)(2s^2)#
You're down to
#"Al: " color(blue)(1s^2) color(red)(2s^2 2p^6)#
You're down to
#"Al: " color(blue)(1s^2) color(red)(2s^2 2p^6) color(green)(3s^2)#
Finally, the last electron is added to one of the
#color(green)(|bar(ul(color(white)(a/a)color(black)("Al: " 1s^2 2s^2 2p^6 3s^2 3p^1)color(white)(a/a)|)))#
And there you have it, the complete electron configuration for aluminium.