Zinc
Helium has only 2 electrons and its energy level is full.
If the outer energy level is full, the element is said to be non reactive and inert. It is stable in nature.
Helium (He)
d block elements, transition metals, transition elements are synonyms.The definition of d block after the IUPAC recommendation is "an element whose atom has a partially filled d sub-shell, or which can give rise to cations with an incomplete dsub-shell".
Helium has a full outermost energy level containing only two electrons.
Hydrogen is the only element in the first period to not have a full outer energy level.
Well, darling, that element you're looking for is helium. It sits pretty on the periodic table with its full outermost energy level of 2 electrons, living its best life. So, there you have it, helium is the sassy star of the show with its energy level on lock.
fluorine
A noble gas is considered unreactive because it has a filled outer energy level. The full outer energy level provides stability and low reactivity, as the element does not need to gain or lose electrons to achieve a stable electron configuration.
Potassium has 1 electron in its outer energy level. When it forms a bond, it typically donates this electron to another element, leaving it with a full outer energy level.
It is the most stable element in the universe and does not need anymore electrons. Its outermost energy level is full.
The level of your dragons is not dependent on your user level. You need to buy shrines for each element, and then meet the requirements for that element.