The mass number is always the sum of the numbers of protons and neutrons and therefore is 39 in this instance. The atomic number of 19 shows that the atom is of the element potassium, and its symbol is 39K.
For the isotope carbon-12: 6 protons, 6 neutrons, 6 electrons
An atom's nucleus contains protons and neutrons, while electrons orbit around the nucleus. The number of protons defines the element, the number of neutrons can vary within isotopes of the element, and the number of electrons equals the number of protons in a neutral atom.
The element with 74 protons is tungsten (symbol W). The number of electrons and neutrons does not affect the identity of the element, which is solely determined by the number of protons.
All beryllium atoms have 4 protons and 4 electrons. The number of neutrons is characteristic of a particular isotope, not of beryllium as a whole, and may be determined by subtracting 4, the number of protons, from the mass number of the isotope.
Protons: 18Neutrons: 18, 20 and 22. Electrons: 18
There are similar number of neutrons and protons. It contains 29 neutrons and protons.
The nucleus of an atom contains only protons and neutrons; there are never any electrons in the nucleus. The number of neutrons is generally equal to or greater than the number of protons.
For the isotope carbon-12: 6 protons, 6 neutrons, 6 electrons
Protons: 5 Neutrons: 7 Electrons: 5
Protons, electrons, and neutrons are the three main parts of atoms. In an atom, the nucleus contains the protons and neutrons, the electrons are found in shells around the nucleus. On the periodic table, the atomic number tells you the number of protons of an element.
An atom's nucleus contains protons and neutrons, while electrons orbit around the nucleus. The number of protons defines the element, the number of neutrons can vary within isotopes of the element, and the number of electrons equals the number of protons in a neutral atom.
As for all other elements: neutrons, protons and electrons.
Number of protons = Number of electrons = Atomic number Number of neutrons = Atomic number - Number of protons
No. The number of neutrons has no affect on the number of protons and electrons.
there are 7 neutrons, 7 protons, and....----electrons
Americium has 95 protons and electrons. Number of neutrons: atomic mass of an isotope - number of protons
Carbon-12 has 6 protons, 6 neutrons, and 6 electrons. The number of protons determines the element (carbon), the number of neutrons plus protons gives the mass number (12), and in a neutral atom, the number of electrons equals the number of protons.