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
http://www.chemguide.co.uk/atoms/properties/atomorbs.html
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)Al: 1s2
You're now down to
"Al: " color(blue)(1s^2) color(red)(2s^2)Al: 1s22s2
You're down to
"Al: " color(blue)(1s^2) color(red)(2s^2 2p^6)Al: 1s22s22p6
You're down to
"Al: " color(blue)(1s^2) color(red)(2s^2 2p^6) color(green)(3s^2)Al: 1s22s22p63s2
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.