Atoms having the same mass number (A) are isobars. Isotones. Atoms having the same number of neutrons (N) but a different number of protons (Z) are isotones. Isomers. Atoms of the same element (same Z and N) but which are in different excited states are isomers.

isotope, one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties. Every chemical element has one or more isotopes.

Electrons are attracted to any positive charge by their electric force; in an atom, electric forces bind the electrons to the nucleus. In some respects, the electrons in an atom behave like particles orbiting the nucleus. In others, the electrons behave like waves frozen in position around the nucleus.

The basic unit of all matter is the atom. The atom is the smallest unit of matter that can’t be divided using any chemical means and the building block that has unique properties.

Matter can be classified according to physical and chemical properties. Matter is anything that occupies space and has mass. The three states of matter are solid, liquid, and gas. A physical change involves the conversion of a substance from one state of matter to another, without changing its chemical composition.

Ionic Bonding Electronegativity is the tendency of an atom to attract electrons in a molecule.

valence electrons

Electronegativity is a property that describes the tendency of an atom to attract electrons (or electron density) toward itself. An atom’s electronegativity is affected by both its atomic number and the size of the atom. The higher its electronegativity, the more an element attracts electrons.

The correct answer of this question is fluorine. Explanation: The tendency of attracting electrons is known as the electronegativity.