Hydrogen.
The atomic number of deuterium (2H) is 1, as it has one proton in its nucleus. The mass number of deuterium is 2, which is the sum of the protons and neutrons in its nucleus (1 proton + 1 neutron = mass number of 2).
The 'standard' hydrogen atom has atomic number 1, atomic mass 1, no neutrons. Although there are 2 other isotopes of hydrogen: - (cant confirm name) which has atomic mass 2 and 1 neutron. - (cant confirm name) has atomic mass of 3 and 1 neutron. All isotopes have atomic number 1.
Electron (beta minus) decay: the atomic mass remain approx. constant, the atomic number will be greater with 1 Positron (beta plus) and electron capture decay: the atomic mass remain approx. constant, the atomic number decrease with 1 Double beta decay: the atomic mass remain approx. constant, the atomic number will be greater with 2
Yes but only if there are no neutrons, such as in hydrogen (atomic number=1, relative Atomic Mass-1)
No, the atomic number and atomic mass are different. Atomic number represents the number of protons in an atom's nucleus, while atomic mass is the average mass of an atom of an element, taking into account the number of protons and neutrons.
The number of neutrons in an atom can be calculated by subtracting the atomic number (number of protons) from the mass number. For hydrogen, the atomic number is 1 and the mass number is also 1. Therefore, the number of neutrons in hydrogen is 1 (mass number - atomic number = 1 - 1 = 0 neutrons).
Atomic number:- the number of a chemical element in the periodic table of Mendeleev- a number equal to the number of protons in the atomic nucleus- a number equal to the number of electrons in the neutral atomRelative atomic mass: the mass of an isotope expressed in atomic mass units(1 amu= 1/12 atomic mass of the isotope 12C).For chemical elements the term atomic weight is reccomended by IUPAC.
The Atomic Mass of krypton is 83.80(1) if you round 84
The electron has no atomic mass number. The mass of an electron is roughly 1/1800 of the mass of a proton or neutron.
atomic mass is the number of protons in an atom mass number is the number of protons plus neutrons in an atom
Each isotope of each element has an atomic mass number. The atomic mass numbers for hydrogen are 1, 2 and 3. That's because hydrogen has three isotopes. "Regular" hydrogen has a single proton in its nucleus. It's atomic mass is 1. There is also heavy hydrogen, which has a neutron bound to the proton in its nucleus. It's atomic mass is 2. Heavy heavy hydrogen has two neutrons bound together with the proton. It's atomic mass is 3. A link is provided to the Wikipedia article on hydrogen.
The atomic mass number of methane (CH4) is the sum of the atomic masses of its constituent elements. Carbon has an atomic mass of approximately 12, and hydrogen has an atomic mass of approximately 1. Adding these together gives a total atomic mass number of 16 for methane.