3 posts • Page 1 of 1
The electron configuration in the periodic table is when the atom is in its ground state, which means that any other electronic configuration of that atom would be its excited state. So the ground state of Li is [Ar] 1s^2 2s^1, which means the example you gave in your post would be in the excited state.
I think you meant [He] haha but anyways, I think one thing you could do is count up the number of electrons in the given configuration and compare the total to the element on the periodic table that has the total as its atomic number. If the elements match, then the configuration is in the grounded state. If it's different, it's most likely in its ground state.
Who is online
Users browsing this forum: No registered users and 1 guest