Smaller
A basketball is made out of atoms.
Larger.
smaller
Smaller
Cation is always smaller than corresponding neutral atom.
No, since electrons are part of an atom, they are smaller -- much smaller. In fact, they weigh practically nothing.
The model of an atom is larger than the actual atom itself. Atom models are simplified representations used to help understand the structure and behavior of atoms at a scale that is easier for us to comprehend.
An atom of scandium is larger than an atom of titanium. This is because scandium has a larger atomic radius due to having more electron shells compared to titanium.
In general, a cation is smaller than its parent atom because it has lost one or more electrons, leading to a decrease in electron-electron repulsion and a smaller electron cloud.
A rubidium atom is larger than a neutral atom because, when it loses an electron to become an ion, it loses an electron from the outermost shell, increasing the effective nuclear charge which attracts the remaining electrons closer to the nucleus, reducing the size of the ion compared to the atom.
This statement is not correct. An atom is made up of a nucleus (containing protons and neutrons) surrounded by electrons. Electrons are subatomic particles that are much smaller and have much less mass than the nucleus of an atom.
An atom comprises an atomic nucleus with orbiting electrons. So the nucleus is smaller than an atom. To phrase it the opposite way, an atom is alwys larger than the nucleus (of the same atom of course!!)