=931mev
Americium has an atomic symbol of Am. Looking at a periodic table, you'll see that it has an atomic number of 95. This indicates the number of protons. As for neutrons: Again referring back to the periodic table, you'll notice Am has an atomic mass of 243amu. Each proton is 1amu, and we know Am has 95 of those. Also, every neutron is 1amu. So, we get 243amu - 95amu = 148amu. And thus there are 148 neutrons.
name content charge mass location protons 2up 1down 1+ ~1amu nucleus neurtons 1up 2down 0 ~1amu nucleus electrons is fundemental 1- 1/2000 amu elecron clould
The atomic mass unit (amu) is defined to be exactly 1/12 of the mass of a C-12 atom (Not a mole of carbon atoms...) Therefore 1 C-12 atom has a mass of exactly 12.00000000 amu. Also, therefore, 1 amu is a very small unit of mass - specifically 1amu = 1.66053X10^-24 grams. 1.00 mole of C-12 atoms has a mass of 12.0000000 grams!
Similarities1. They nearly have the same mass.2. They are both inside the nucleus. (They are both nucleons).3. Strong nuclear forces act on protons and neutrons.Differences1. Protons are positively charges and neutrons carry no charge.
protons --- rel. mass 1 amu, rel. charge +1, location in the nucleus. neutrons --- rel. mass 1 amu, rel. charge 0, location in the nucleus. electrons --- rel. mass 0 amu, rel. charge -1, location outside the nucleus.
Protons and neutrons have the mass of 1 amu.
The neutron and the proton have masses close to 1 amu.
Yes, they are neutral; and yes, their mass is close to 1 amu.
They are calculated by atomic mass units (amu) proton-1amu neutron-1amu electron-0amu
Americium has an atomic symbol of Am. Looking at a periodic table, you'll see that it has an atomic number of 95. This indicates the number of protons. As for neutrons: Again referring back to the periodic table, you'll notice Am has an atomic mass of 243amu. Each proton is 1amu, and we know Am has 95 of those. Also, every neutron is 1amu. So, we get 243amu - 95amu = 148amu. And thus there are 148 neutrons.
name content charge mass location protons 2up 1down 1+ ~1amu nucleus neurtons 1up 2down 0 ~1amu nucleus electrons is fundemental 1- 1/2000 amu elecron clould
There are 88 neutrons in Samarium (Sm). This can be calculated quite easily: Neutrons=1amu Protons=1amu Since the atomic mass is equal to the sum of protons and neutrons, and the atomic number is the number or protons, you can simply subtract the mass from the atomic number to see how many neutrons are present. (Atomic Mas - Atomic Number = Number of neutrons) 150 - 62 = 88 (Note: The mass of Sm is slightly larger than 150 but for the purpose of time, mass is almost always rounded in calculations)
Hydrogen molecule is the lightest because of its atomic mass being less than any other molecule .i.e 1amu (atomic mass unit). Hence Hydrogen molecule is lighter than Methane molecule.
The atomic mass unit (amu) is defined as 1/12 the mass of a carbon-12 atom. It is a unit of mass that is used to describe the masses of atoms and molecules. The mass of a proton is actually slightly less than the mass of a carbon-12 atom, so it is not equal to 1 amu. However, the mass of a protium atom (which is an atom that consists of a single proton and no neutrons) is very close to 1 amu. This is because the mass of the proton makes up most of the mass of a protium atom. Therefore, protium is often said to be "approximately equal" to 1 amu.
The election within an atom would have the least mass. Protons and neutrons have a mass roughly that of 1amu, while an electron's is 1/1840 of an amu.
Well your question is not exactly clear. But the ONLY thing that defines one element from another is the number of protons it has. Hydrogen has 1 proton, helium has 2 protons and so on. A neutral atom has an equal amount of protons and neutrons. An isotope is an atom that has an imbalace of of protons and neutrons, but only the number of neutrons can change. Never protons, because that would make it another element. Protons and neutrons each wiegh 1amu (atomic mass unit). A neutral helium atom has 2 protons and 2 neutrons. So its atomic weight is pretty much 4amu. Electrons wiegh 1836 times less than 1amu so they are almost signifigant to the mass of an atom. Number of protons make an element what it is.
The atomic mass unit (amu) is defined to be exactly 1/12 of the mass of a C-12 atom (Not a mole of carbon atoms...) Therefore 1 C-12 atom has a mass of exactly 12.00000000 amu. Also, therefore, 1 amu is a very small unit of mass - specifically 1amu = 1.66053X10^-24 grams. 1.00 mole of C-12 atoms has a mass of 12.0000000 grams!