smallest particle of an element that retains the properties of that element.
Ionized atom Excited atom
"nucleus"
When an atom has an electric charge it is called an ion.
When an atom has an electric charge it is called an ion.
"nucleus"
"nucleus"
The nucleus of an atom has a positive charge.The protons in the nucleus of an atom are charged oppositely from the electrons in the cloud around them. By convention, their charge is defined as "positive" while the charge on the electrons is defined as "negative".
The nucleus of an atom has a positive charge.The protons in the nucleus of an atom are charged oppositely from the electrons in the cloud around them. By convention, their charge is defined as "positive" while the charge on the electrons is defined as "negative".
Pio
This is defined as the number of protons in the nucleus of an atom, it aslo equals the number of electrons in the atom. d:
an isotope is defined by an atom with the same number of protons, but a different number of neutrons
That varies depending on the element and the isotope. An element is defined by its number of protons. This is called the "atomic number" of an element.