Because there are increasingly more protons, electrons, and neutrons. Atomic Mass is the average number of neutrons in all of the isotopes(different types) of a specific element, meaning you can sometimes have decimal masses. But, the atomic number is never a decimal because the atomic number is just a numbering system for all the elements.
The atomic size increase from top to bottom of periodic table. As the number of shells increases from top to bottom, the atomic size increases.
From the bottom to the top, the elements of the atomic periodic table have less mass and are more stable, in general.
The atomic radius decreases.
The atomic radius decreases.
The elements with the highest mass are on the bottom right of the periodic table.
The atomic size increase from top to bottom of Periodic Table. As the number of shells increases from top to bottom, the atomic size increases.
The atomic size increase from top to bottom of periodic table. As the number of shells increases from top to bottom, the atomic size increases.
From the bottom to the top, the elements of the atomic periodic table have less mass and are more stable, in general.
The atomic radius decreases.
Towards the bottom, atomic mass increases. Atomic number also increases.
The atomic radius decreases.
on the bottom
The atomic mass.
Actinides comprise of atomic number 90-103. They are placed at bottom of periodic table.
The elements with the highest mass are on the bottom right of the periodic table.
It tends to increaseThe atomic radius increases down the group
Atoms to the left on the periodic table Atoms with a large atomic radius