You look up antimony. You discover its symbol is SB. You look on your Periodic Table. You come to the symbol SB. You see that it is number 51. You know that is also the number of protons in the atom. You know that 122 is the atomic weight. You know that the Atomic Weight mainly comes from the weight of the neutrons and protons. You know that when you have the atomic weight you can subtract the atomic number from the atomic weight and get the number of neutrons.
Bi-211 (and all other Bi isotopes) has atom number 83, hence there are 83 protons.
There are 18, 20 or 22 neutrons.
Hydrogen typically has 0 neutrons.
A kg equals 2.204 pounds. You may do the math.
In-115 isotope has 66 neutrons
Protones = 51 Electrones = 49 Neutrones = 70 or 72
Antimony (symbol Sb) has three isotopes: 121Sb, 123Sb, and 125Sb. The 121 isotope has 70 neutrons, and the 123 isotope has 72 neutrons. The 125 isotope isn't stable and will decay, but it has 74 neutrons.
The isotope iodine-122 has 53 protons and electrons and 69 neutrons.
51 protons, 51 electrons and 70 neutrons (in Antimony-171 isotope)
Antimony has 51 electrons and protons; the number of neutrons is specific for each isotope. Number of neutrons in an antimony isotope = Mass number - 51
Thorium-232 has 90 protons and 122 neutrons.
Antimony (Sb) has the atomic number of 51. The atomic number is the same as the number of protons in the atom (an the same as the number of electrons in the neutral atom).
Atomic number = 106 So number of neutrons = 122 - 106 = 116
An element's number of protons is the same as its atomic number. Thus, an atom with 51 protons has the atomic number 51. By looking up this element on the periodic table, one finds that it is antimony.
Antimony is a meta element. Atomic mass of it is 122.
121Sb has 71 neutrons. This can be calculated by subtracting the atomic number of antimony (Sb), which is 51, from the mass number, which is 121.
Sb Antimony