The nucleus (sp?)
The nucleus.
The core at the center of an atom is called the nucleus. It contains protons, which have positive charge, and neutrons, which contribute to the mass of the atom.
The center of an atom is the atomic nucleus.
The center of an atom is called the nucleus.
The center of an atom is called a nucleus (nucleifor plural).Center of an atom is called the "Nucleus".
Nucleus is at the center of atom. It is surrounded by electrons.
The center of an atom of any element is the nucleus.
The nucleus, the center, of an atom is composed a protons and neutrons.
Simply "atom".
The protons are in the center of a atom.
in the center of the atom
Protons and neutrons lie in the atom's nucleus, accounting for almost 100% of the atom's weight. The center of an atom is called it's nucleus.