This is the "mass number" of the atom, indicating relative mass of an isotope.
For example uranium-235 (235U) is a lighter atom than uranium-238 (238U) because while both isotopes have 92 protons (the atomic number), the first has 3 fewer neutrons.
All elements have neutrons and protons within the nucleus.
The mass number is the sum of neutrons and protons in the nucleus of an isotope.
Protons are positively charged particles found in the nucleus of an atom. The number of protons in the nucleus determines the element's atomic number. Neutrons are neutral particles also found in the nucleus, and together with protons, they determine the atomic mass of the element.
An atomic nucleus contain protons and neutrons; protons and neutrons contain quarks and gluons.
No, protons also make up the nucleus along with neutrons. Protons have a positive charge while neutrons have no charge. The number of protons determines the element, while the number of neutrons can vary within isotopes of the same element.
All elements have neutrons and protons within the nucleus.
The nucleus contains the protons and neutrons. The number of protons determines the atomic number of the element and the number of protons and the number of neutrons together determine the atomic mass.
The mass number is the sum of neutrons and protons in the nucleus of an isotope.
Protons are positively charged particles found in the nucleus of an atom. The number of protons in the nucleus determines the element's atomic number. Neutrons are neutral particles also found in the nucleus, and together with protons, they determine the atomic mass of the element.
An atomic nucleus contain protons and neutrons; protons and neutrons contain quarks and gluons.
No, protons also make up the nucleus along with neutrons. Protons have a positive charge while neutrons have no charge. The number of protons determines the element, while the number of neutrons can vary within isotopes of the same element.
The atomic nucleus contains protons and neutrons, which are held together by strong nuclear forces. The number of protons in the nucleus determines the element, while the combination of protons and neutrons determines the isotope of that element. Additionally, the nucleus is surrounded by a cloud of electrons that orbit around it.
Electrons are negatively charged, smaller than neutrons and protons, and orbit around the nucleus. Neutrons have no charge, are about the same size as protons and are found in the nucleus. Protons have a positive charge, are about the same size as neutrons and are found in the nucleus.
The mass number is the total number of protons and neutrons in an atom's nucleus, while the atomic number is the number of protons in the nucleus. The mass number determines the atom's mass, while the atomic number determines the element's identity on the periodic table.
The nucleus of an isotope with a specific atomic mass and number contains protons and neutrons. The number of protons determines the element, while the sum of protons and neutrons gives the atomic mass. The neutrons in the nucleus help stabilize it by balancing the repulsion between positively charged protons.
protons and neutrons in its nucleus. The number of protons determines the element, while the number of neutrons can vary to create different isotopes of that element.
Neutrons are the particles that contribute to the mass of an atom, along with protons. Neutrons have a similar mass to protons, but they do not have a charge. The number of protons and neutrons in an atom's nucleus determines its atomic mass.