Iron is a element while steel is an annoy.
The correct option is ARGON.
To quickly find out the element that is been described by the electronic configuration, write down and add together all the index figures in the electronic configuration. The index figures in the above electronic configuration are 2, 2, 6, 2 and 6. If you add all these figures together, you will get 18 and the element that has the atomic number of 18 is argon.
Answer:
open system
Explanation:
An open system is a system in which both energy and matter are exchanged with the surroundings.
I like that game Forza horizon
1 valence electron in alkali metals.
