The Atomic Mass is grams/mole
So when you have e.g. 12 grams of carbon which has atomic mass = 12, you have one mole. ( Avogadro's number is one mole: 6.02×10²³ )
Henry Moseley found the relationship between the wavelengths of x-rays and the atomic number of elements. He proposed that the atomic number of an element is better defined by the number of protons in the nucleus rather than by its atomic mass.
The proton number, or atomic number, is the number of protons in an atom's nucleus, and it determines the element's identity. Each element has a unique atomic number, so elements are defined by the number of protons they possess.
Isotopes of an element have the same number of protons in their nuclei (same atomic number) but different numbers of neutrons, resulting in different mass numbers. This difference in neutron content gives each isotope unique physical properties such as stability, radioactivity, and atomic mass.
all element have an atomic number.
The atomic number of an element is the number of protons in the nucleus of its atom. It is typically found on the periodic table of elements, where elements are arranged in order of increasing atomic number. Each element has a unique atomic number that distinguishes it from other elements.
The atomic number of an element determines its identity. Each element has a unique atomic number, which is the number of protons in the nucleus of its atoms. This number defines the element and distinguishes it from other elements on the periodic table.
Henry Moseley found the relationship between the wavelengths of x-rays and the atomic number of elements. He proposed that the atomic number of an element is better defined by the number of protons in the nucleus rather than by its atomic mass.
A German chemist Dobernier observed relationship between atomic masses of several groups of three elements called traids.In these groups the central or middle element had atomic mass average to the other two elements.
The mole is the atomic weight expressed in grams.
The density of an element is a physical property that describes its mass per unit volume. Different elements have different densities based on their atomic structure and arrangement of atoms. Generally, elements with higher atomic masses tend to have higher densities.
Electron configuration is the arrangement of elements according to their increasing atomic numbers whiles period is the arrangement of elements according to the increasing number of valence electrons.
the atomic number is the number of protons in a certain element. elements are arranged on the periodic table by atomic number in increasing order
The proton number, or atomic number, is the number of protons in an atom's nucleus, and it determines the element's identity. Each element has a unique atomic number, so elements are defined by the number of protons they possess.
Atomic number: number of protons in a nucleus unique to an element Atomic Mass number: number of protons + number of neutrons in a nucleus. May be a small range of values for a given element. Very roughly the atomic mass number is double the atomic number. For large elements it is more than double.
Isotopes of an element have the same number of protons in their nuclei (same atomic number) but different numbers of neutrons, resulting in different mass numbers. This difference in neutron content gives each isotope unique physical properties such as stability, radioactivity, and atomic mass.
The atomic number of an element is the number of protons in the nucleus of an atom of that element. It determines the unique identity of an element and its position on the periodic table. Elements with the same atomic number belong to the same element, while elements with different atomic numbers are different elements.
If "element 5" in this question means the element with atomic number 5, then all of the elements with atomic numbers 1 through 4 have smaller atomic masses. These elements are hydrogen, helium, lithium, and beryllium.