Any substance on the Periodic Table of elements.
e.g. Technetium (43), Hydrogen (1), Helium, (2)
A pure substance in which all the atoms have the same atomic number or number of protons is an element.
An element is a substance in which all atoms have the same number of protons. Each element is identified by its unique number of protons, known as the atomic number.
The atomic number of boron is 5, and since the atomic number of an element is the number of protons in the nuclei of its atoms, boron atoms have 5 protons in their nuclei.
Atomic number tells you the number of protons. There is no need to define a standard state.
An element is a unique substance composed of atoms with the same atomic number, meaning they have the same number of protons in their nucleus. Each element is distinguished by its atomic number, which determines its position on the periodic table and its chemical properties.
A pure substance in which all the atoms have the same atomic number or number of protons is an element.
Element
The atomic number is the number of protons in the nucleus of an atom, while the atomic mass is the total mass of the nucleus (both protons and neutrons)
An element is a substance in which all atoms have the same number of protons. Each element is identified by its unique number of protons, known as the atomic number.
it protons is the answer.
Element
No two elements have the same number of protons.
The number of protons in the atomic nucleus is equal to atomic number.
Protons.
All atoms with the same number of protons are atoms of the same element. The number of protons is the atomic number of the element.
The atomic number of an atom is the atoms number of protons. The number of protons is same as the number of electrons.
An element is a substance whose atoms all contain the same number of protons and the same number of electrons. The number of protons in an element's atom determines its atomic number and defines its chemical identity.