The period is independent of the mass.
5 to 4 is in its lowest terms.
The lowest multiple of any number is the number itself. The lowest common multiple of 4 and 5 is 20.
4/15 is a fraction, already in its lowest terms
That is in lowest terms already
In a given period, the element with lowest atomic mass will belong to group 1. It should also be noted that lithium is the metal with the smallest atomic mass.
The element in period 4 of the Periodic Table with the highest electronegativity is krypton (2.96). The period 4 element with the lowest electronegativity is potassium (0.82).
The atom that has the lowest mass is hydrogen. So assuming the same numbers of atoms in each element, hydrogen would be the element with the lowest mass.
Potassium is the period four element with the lowest mass; its average mass is 39.0983amu.
The lowest mass isotope of hydrogen is also by far the most common one: 1H, with an atomic mass of around 1.01 amu.
Vanadium symbol: V the atom number for Vanadium is V23 the relative atomic mass for Vanadium is 51
The period is independent of the mass.
Hydrogen
The mass has no significant effect on the period.
The element with the lowest atomic number in period 3 is sodium (Na) with an atomic number of 11.
Helium with an atomic mass of 4.00260
Mercury, with a mass of 0.055 times that of the Earth.Mercury is the smallest of the eight planets, and has the lowest mass.