Ununpentium is a member of group 15 of the periodic table. It has been observed that the valence electrons of ununpentium fall into 3 subshells, which are 7s (2 electrons), 7p1/2 (2 electrons) and 7p3/2 (1 electron). It is observed that both ununpentium and ununtrium has identical predicted melting and boiling point since both of them have a single electron, which is outside a quasi-closed shell arrangement that has the ability to delocalize when they are in a metallic state. The predicted density of ununpentium is 13.5 g/cm3. This unnamed radioactive element is considered to be in between island of stability and is centered around element 112 (copernicium) and element 114 (fierovium), but the reason behind such incidence of this island has not been apprehended as yet. It is also noteworthy that although there are inadequate numbers of neutrons required to be on the island of stability, they can be seen to move towards the island, as the heavier isotopes are known to be longer-lived.
It is also interesting to note that the isotope 291Uup is has one neutron more than 290Uup, which is the heaviest known ununpentium isotope. Ununpentium is known to have four half lived isotopes and some of the calculations reveal that the most steady isotope is 289Uup.
While ununpentium does not occur naturally, scientists had to put in their effort to synthesize in the labs by bombarding americium atoms with calcium ions and as a result of such bombardment of americium atoms with calcium ions, a new element could be created which resulted only for a few milliseconds and then it decayed into different commonly known elements. Interestingly, there is a popular Conspiracy theory, which states the UFOs used that ununpentium. Another interesting fact about ununpentium is that it has also appeared to be a weapon in many video games.