Only the anion is greater than the atom because gained an electron.
It is NOT greater. It is smaller. This is because the Hydrogen ion has lost its electron from the atom and is thus smaller. The hydrogen ion is a proton.
A negative ion has gained one or more electrons to become negatively charged, while its parent atom is neutral with an equal number of protons and electrons. This means the negative ion has more electrons than its parent atom.
An iodine atom has one more principal energy level than a bromine atom. Therefore the radius of an iodine atom is greater than the latter.
18.96 times greater = 19.96 times as great.
Only the anion is greater than the atom because gained an electron.
If by Be you mean beryllium then yes.
It is NOT greater. It is smaller. This is because the Hydrogen ion has lost its electron from the atom and is thus smaller. The hydrogen ion is a proton.
When an atom gains one or more electrons to form a negative ion, its size generally increases. This is because the additional electrons cause greater repulsion between the electrons, resulting in an increase in the overall size of the atom.
The atom that is smallest in size is the hydrogen atom.
The amount of protons in the nucleus of an iron atom is greater than in that of an aluminum atom.
A positive ion is smaller than its parent atom because it has less electrons than its parent atom. The reduced number of electrons are then pulled more tightly to the positive nucleus because the number of protons remains the same, and these now exceed the electrons in number.
A parent atom is a term used to describe the original state of an atom or element before it undergoes a chemical change. For instance, it may be used when discussing radioactive decay. The original element would be the parent atom, and the element that results from the radioactive decay would be the daughter atom. It may also be used when discussing ions. The parent atom would be the element before it undergoes ionization, and the daughter atom would be the resulting cation or anion.
A negative ion is typically larger than its parent atom. When an atom gains an electron to become a negative ion, the added electron increases the electron-electron repulsions, causing the electron cloud to expand. This expansion results in a larger ionic radius compared to the neutral atom.
By the size of the atom and its mass
An atom is the size of an orange compared to the Earth.
The size of a silicon atom is about 0.11 nanometers.