According to the extended table,
Element 120 is expected to be a typical alkaline-earth element. As with element 119, the ionization energies should be higher than the normal family trend would indicate and should make the metallic and ionic radii smaller. These changes should make the chemistry of element 120…
Unbiunium, also known as eka-actinium or simply element 121, is the hypothetical chemical element with symbol Ubu and atomic number 121.
No unbinilium atoms were identified. Neither element 119 nor element 120 was observed.
Ununennium, also known as eka-francium or element 119, is the hypothetical chemical element with symbol Uue and atomic number 119. Ununennium and Uue are the temporary systematic IUPAC name and symbol respectively, which are used until the element is discovered, confirmed, and a permanent name is decided upon.
Einsteinium - Element information, properties and uses | Periodic Table.
Because electrons have non zero rest mass, they cannot exceed the vacuum speed of light according to Einstein's theory of relativity. Thus, atoms with Z > 137 cannot exist.
The element which comes on 128 number is Trititanium (Tt).
Unbihexium (pronounced /ˌʌnbɪˈhɛksiəm/) is an unsynthesized chemical element with atomic number 126 and symbol Ubh.
Unbibium, also known as element 122 or eka-thorium, is the hypothetical chemical element in the periodic table with the placeholder symbol of Ubb and atomic number 122.
Unbibium /uːnˈbɪbiəm/, also known as eka-thorium or simply element 122, is the currently hypothetical chemical element in the periodic table with the placeholder symbol of Ubb and atomic number 122.
Unbiquadium, also known as element 124 or eka-uranium, is the hypothetical chemical element with atomic number 124 and placeholder symbol Ubq. Unbiquadium and Ubq are the temporary IUPAC name and symbol, respectively, until the element is discovered, confirmed, and a permanent name is decided upon.
(~129~Cs)Caesium.
Untrinilium, Utn, is the temporary name for element 130. Isotopes are predicted within the bands 438Utn to 375Utn, 369Utn to 355Utn, and 317Utn to 299Utn. There may be isotopes in the band from the neutron dripline to 439Utn, but it is not possible to predict which ones are possible.
Untrioctium (pronounced /ˌʌntraɪˈɒktiəm/) is an unsynthesized chemical element with atomic number 138 and symbol Uto.
Unbipentium is a hypothetical (theoretical or imagined) element of the periodic table. It is also known as eka-neptunium. The atomic number of this element is 125. It has the symbol Ubp.
Since element 123 is unknown, it has no biological role.
Untripentium, Utp, is the temporary name for element 135.
Fermium is a chemical element with symbol Fm and atomic number 100.
Fermium - Element information, properties and uses | Periodic Table.
Indium - Element information, properties and uses | Periodic Table.
praseodymium (Pr), chemical element, a rare-earth metal of the lanthanide series of the periodic table. praseodymium.
Astatine is a chemical element with the symbol At and atomic number 85. It is the rarest naturally occurring element in the Earth's crust, occurring only as the decay product of various heavier elements.