Isotopes of an element have same number of protons and different number of neutrons. Hence similar in chemical properties and different in physical properties.
An atom of oxygen typically has 8 protons, 8 neutrons, and 8 electrons, giving it a mass number of 16. Oxygen-18, on the other hand, has 8 protons and 10 neutrons, totaling a mass number of 18.
For elements with no stable isotopes, the mass number of the isotope with the longest half-life is used.
No. For the most part, it is arranged by the number of protons. But even here there are exceptions.
Americium has (all the isotopes) 95 electrons.
Several come to mind. They are both found in the nucleus of an atom. Protons have a positive charge, while neutrons have no charge. They are nearly the same size, though neutrons are a bit larger. The sum of the protons and neutrons in an isotope of an element is its mass number.
The atomic mass equals neutrons and protons. This is true in non isotopes as well.
There are always two protons.
An atom of oxygen typically has 8 protons, 8 neutrons, and 8 electrons, giving it a mass number of 16. Oxygen-18, on the other hand, has 8 protons and 10 neutrons, totaling a mass number of 18.
Boron-11 is an isotope. The atomic number of Boron is 5 which means it has 5 protons, (if there were more or less protons the element wouldn't be boron). the isotope number (11) is the number of protons plus neutrons. to find out the number of neutrons you would take take the isotope and subtract it by number of protons (11-5) which yields 6. To find the isotope add the number of protons to the number of neutrons.
All the oxygen isotopes, natural or artificial, has 8 protons, because th atomic number of oxygen is 8.
For elements with no stable isotopes, the mass number of the isotope with the longest half-life is used.
They are different because of the number of electrons in there electron cloud. True, the number of electrons are specific to the type of atom but so are the number of protons. The atomic number of the atom is directly related to the number of protons and electrons it has. So carbon for example is given the atomic number 6. Thus it has 6 protons and 6 electrons. It's atomic mass is 12.0107 amu. This we can round to 12. To aquire the atomic mass of a given element you add the number of protons and nuetrons together since the electrons are so infinitely small they are not considered to have any mass. We know from the atomic number that carbon has 6 protons, it's atomic mass is 12, so that means the number of nuetrons must also be 6. This doesn't exactly answer the question though. The obvious things that differentiate one atom from another are their atomic number, the number of protons and electrons inside an atom, and their atomic mass.
Yes, it is true, the number of protons is equal to atmic number.
No. For the most part, it is arranged by the number of protons. But even here there are exceptions.
Not; the number of protons in isotopes is identical; only the number of neutrons is different.
Yes, this is the definition of mass number.
It is not true: francium has 87 protons.