Mass number = Number of protons + Number of neutrons
For the isotope 241Am the mass number is 241; for 242Am is 242, for 243Am is 243, etc.
Americium has isotopes with mass numbers that range from 231 through 249.
After IUPAC 2009:
Americium 241: 241,0568
Americium 241: 243,0614
For other isotopes see the link bellow>
The Atomic Mass of the most common isotope of americium, Am-241, is 241,056829; the mass number is 241.
Other isotopes have atomic masses and atomic numbers of course different.
See the link below.
The atomic number of the element americium (Am) is 95. From this we can tell that the nucleus of the atom is 95 protons. As an atom is electrically neutral (number of positively charged protons is equal to the number of negatively charged electrons and both carry a relative charge of magnitude 1), an americium atom would also have a total of 95 electrons in its electron shells. The mass number of Am is likely around 243, so you can estimate that an atom of Am would have 243 - 95 = 148 neutrons. Of course, if there are isotopes, the number of neutrons would vary for each isotope of americium.
Americium has (all the isotopes) 95 electrons.
Atomic mass is the mass of 1 mole of the element. Atomic number is the number of protons the element has
There are 19 known isotopes of americium, with neutron counts ranging from 136 to 154. Americium-241, the easiest to produce, has 146 neutrons. Number of neutrons = Atomic weight (rounded) of an americium isotope - 95 Each isotope has a different number of neutrons. Americium has also 95 protons and electrons.
the atomic mass is the number of protons and neutrons in an atom of an element and the atomic number is the number of protons of an atom of an element.
Americium has 95 protons and electrons. Number of neutrons: atomic mass of an isotope - number of protons
IUPAC proposed the atomic weight (243).
The atomic number of the element americium (Am) is 95. From this we can tell that the nucleus of the atom is 95 protons. As an atom is electrically neutral (number of positively charged protons is equal to the number of negatively charged electrons and both carry a relative charge of magnitude 1), an americium atom would also have a total of 95 electrons in its electron shells. The mass number of Am is likely around 243, so you can estimate that an atom of Am would have 243 - 95 = 148 neutrons. Of course, if there are isotopes, the number of neutrons would vary for each isotope of americium.
Americium has (all the isotopes) 95 electrons.
Atomic mass is the mass of 1 mole of the element. Atomic number is the number of protons the element has
There are 19 known isotopes of americium, with neutron counts ranging from 136 to 154. Americium-241, the easiest to produce, has 146 neutrons. Number of neutrons = Atomic weight (rounded) of an americium isotope - 95 Each isotope has a different number of neutrons. Americium has also 95 protons and electrons.
Sodium is a metal element. Atomic mass number of it is 23.
Americium has 95 protons and electrons. Number of neutrons: atomic mass of an isotope - number of protons.
Atomic number is the number of protons in the nuclei of the atoms of an element. Atomic number is unique to each element. Atomic Mass is the combined mass of the protons, neutrons, and electrons in an atom of an element.
the atomic mass is the number of protons and neutrons in an atom of an element and the atomic number is the number of protons of an atom of an element.
Calcium is a metal element. Atomic mass of it is 40.
The atomic mass of the isotope americium-242 is 242,059 549 2.