Are all atoms the same size?

Answer 1

nope
USUALLY
the more electeones it have, the bigger it is.

but Li is bigger than Be

Answer 2

No, not all atoms are the same size. They may be similiar, but depending on their electronic configurations, number of protons and neutrons, their sizes will indefinetely vary. There is no set specific size that can accurately depict the actual size of the atom, but according to wild guesses by great scientists, the radii of the atom is representatitive of the area in which electrons could be floating in at any given time. So with this being said, here's an example:

Fluorine (Very Small) vs Iodine (Very Large).
Fluorine only has a 1s2s2p shell, and 7 valence electrons on a high energy orbital, whereas Iodine has [Kr]5s4d5p shell, where 7 valence electrons or on a low energy orbital. For fluorine to lose an electron is so much more painful than for Iodine, and thus size is influenced by the highly electronegative pull. Fluorine is more electronegative, and thus has a itty bitty tiny radii, whereas Iodine is not so electronegative, and has a huge radii

Answer 3

Atoms of the same element has the same radius (therefore, the same size). The radius of an atom depends on it's atomic number. When the atomic number increases, the number of energy levels in the atom increases, and the radius of the atom increases - so the size of the atom also increases.

Answer 4

atoms of the same element have the same size

Answer 5

no definitely not.the size of the atom increasing from hydrogen regularly.