um i'm having trouble with this question. i also need two examples of each.
2007-03-12 15:16:58 · 6 answers · asked by ggirl 1 in Science & Mathematics ➔ Chemistry
Thanks....
2007-03-12 15:28:16 · update #1
Isotopes have the same atomic number (protons) and chemical behavior; but different numbers of neutrons and therefore different atomic weight. (Number of neutrons also affects stability of the nucleus, which is important in nuclear science.)
2007-03-12 15:21:22 · answer #1 · answered by dukefenton 7 · 0⤊ 0⤋
They have the same number of protons and electrons, but different number of neutrons. This means that isotopes will react almost identically to each other chemically, but have different atomic masses and therefore the atoms move more slowly at the same temperature. Additionally, their nuclear (radiological) properties can be dramatically different.
Examples:
Phosphorus 31: Common isotope, stable.
Phosphorus 32: Radioactive isotope, used in research setting, half life 14.3 days. Strong Beta particle emitter.
Uranium 238: Almost stable, half life 4.5E9 years. Used as for radiation shielding.
Uranium 235: Fuel for nuclear weapons and reactors. Half life about 7.0E8 years.
Both sets of isotopes will form identical compounds, with almost identical kinetics.
2007-03-12 15:18:44 · answer #2 · answered by Anonymous · 1⤊ 0⤋
the number of protons dictates which element you have present. 1 proton = hydrogen, 2 protons = helium..etc
unless you have an ion, the number of electrons = number of protons.
the number of neutrons varies and creates more or less stable atoms.
normal everyday hydrogen has 1 proton, 1 electron, no neutrons. deuterium, an isotope of hydrogen contains 1 p, 1 e, and 1 n. tritium is 1 p , 1 e, and 2 n
2007-03-12 15:21:53 · answer #3 · answered by Dr W 7 · 1⤊ 0⤋
Tritium (two neutrons, one proton) and Deuterium (one neutron, one proton) are isotopes of Hydrogen (one proton). They will react with elements in the same way that Hydrogen does will but also posses properties of their own, for example Tritium is radioactive. When Tritium reacts with oxygen it will form a special type of radioactive water called "heavy water."
2007-03-12 15:24:27 · answer #4 · answered by helloeveryone 3 · 0⤊ 0⤋
The number of protons and electrons stay the same but the mass and number of neutrons change
2007-03-12 15:19:42 · answer #5 · answered by Nathan 3 · 0⤊ 0⤋
same number of protons and electrons but different amount if neutrons leading a change in weight (because neutrons weigh something)
2007-03-12 15:19:59 · answer #6 · answered by flkasdjflkasdj;lrf 3 · 0⤊ 0⤋