The element Um stands for ununpentium, which was the temporary name for element 115 on the Periodic Table. It has since been officially named moscovium (Mc). Moscovium is a synthetic element that was first synthesized in 2003 and is highly unstable, with very few atoms having been produced. It is part of the p-block of the periodic table and belongs to the group of elements known as the post-transition metals.
Um, the element calcium? Protons, neutrons, electrons..
lithium
Carbon
Arsenic
j
um...no...
The um element is not a standard HTML element in web design. It seems there may have been a typo or misunderstanding. Can you please provide more context or clarify the element you are referring to?
Um, the element calcium? Protons, neutrons, electrons..
Um - that would be Ray Ban!
by capturing in monks mountain or in volcano after fire element um
The Pronunciation Rebus of Thallium is Thal-li-um answered by: Emily Houston
um alotta Michael Jackson wannabes are out there....
iron
Hydrogen
Chlorine.
there is no such element
lithium