The properties of elements are found to be periodic when arranged according to atomic number. Hence atomic number is considered as base for arranging the elements.
Th is element number 90 on the periodic table It is thorium, it is in the Actinides, and it is radioactive
Element 95 is americium.
the original periodic table was based on th elements it had
its valence electrons, its number of energy levels, how reactive it is, and some properties it has
No element has the symbol of just T on the periodic table of the elements. Here are the "T" within the Period Table of Elements: Ti = Titanium Tc = Technetium Te = Tellurium Tl = Thallium Ta = Tantalum Tb = Terbium Tm = Thulium Th = Thorium
Lithium, (Li) element three and the least reactive of the alkali metals group.
Noble gases are extremely unreactive.
Because they are adjacent members of the same periodic table column.
the answer is calendar
Krypton is the 36 th element in the periodic table. It is a noble gas belonging to 4th period of the periodic table.
Any element in the same group as fluorine (F, Cl, Br, I)