Structure of Atom: Nucleus and Electron Cloud

The number of protons in an atom's nucleus.

Atoms of the same element with different numbers of neutrons (and therefore different masses).

The total number of protons and neutrons in an atom's nucleus.

The stable form of an element that occurs most naturally.

The negatively charged particles orbiting the atom's nucleus.

The type of bond formed when atoms share electrons to achieve a stable electron configuration.

The type of bond formed when atoms transfer electrons to achieve a stable electron configuration.

The central part of an atom, containing protons and neutrons.

The ability of a material to conduct electricity due to free-moving electrons.

The outermost shell of electrons in an atom.

The columns in the periodic table, where elements share similar chemical properties.

The force that holds atoms together in metals through the 'sea' of electrons.

The arrangement of electrons in an atom's energy levels.

The ability of an element to form chemical bonds, which is determined by the valence electrons.