This is the anion of the isotope arsenic-73: 73As3-; it is impossible to write correct in WikiAnswers.
That would be the strontium ion, Sr2+.
Rubidium
Rubidium
86 Kr +1
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Boron (symbol B, atom number 5) is build up with:5 protons, 5 electrons and 5 or 6 neutrons, depending on the mass number of the two possible isotopes: B-(10) has 5 neutrons and B-(11) has 6 of them respectively.
What is a symbol of 50 protons and 46 electrons?
Apart from using the symbol to look it up on the periodic table, you can't, and even that will not give you the number of neutrons directly.
The 34 protons means that this is the element that has an atomic number of 34, which is selenium. The mass number for the isotope given is 67, which is the sum of the protons and neutrons. Mass number is not the same as atomic mass. Atomic mass is the total mass of the protons, neutrons, and electrons in an atom.
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Sulfur is a chemical element with the symbol S and atomic number 16. It has 16 protons, 16 neutrons and 16 electrons.
Titanium is the element having 22 protons and 21 neutrons. Its symbol is Ti.
Potassium and it has 19 electrons and protons and 20 neutrons. Potassium and it has 19 electrons and protons and 20 neutrons. Potassium and it has 19 electrons and protons and 20 neutrons.
potassium
17O2-
n
108Sn+2
- The atomic symbol is only an abridged form of the name of a chemical element. - The chemical symbol of neon is Ne; the atomic number is 10. - The atomic number is equal to the number of protons and electrons. - Number of neutrons = Atomic mass of an isotope - Atomic number
There are a variety of isotopes that have 30 neutrons. It isn't the number of neutrons that determines an element, but the number of protons. Electrons generally balance the number of protons.
So, all you have to look at is at the atomic number of the elements on the periodic table, which it is at the top of the symbol on the P.T, and that is the number of protons and electrons! Now, to find the number of neutrons, you have to find the number at the bottom of the element symbol called the atomic mass no. and you take away that by the top number.
Boron (symbol B, atom number 5) is build up with:5 protons, 5 electrons and 5 or 6 neutrons, depending on the mass number of the two possible isotopes: B-(10) has 5 neutrons and B-(11) has 6 of them respectively.