Yes, the number of neutrons can be any number you want it to be, however there is typically only one stable isotope of an element. Radioactive elements and those in the f-block are more likely to have more than one isotope.
isotope
All isotopes of an element have the same number of protons, otherwise they would not be the same element. What varies is the number of neutrons, they can be more or less than in the stable isotope(s) of the element.
Not by itself. The mass number is the sum of the numbers of protons and neutrons in he nucleus for each isotope of the element, or for elements with more than one stable isotope is an average depending on the natural abundance of the stable isotopes of the element.
To find out the number of electrons in an element you must add the protons and neutrons and subtract that number with the atomic mass, this will determine the amount of electrons because the unknown element could be an isotope and have more than the normal amount of electrons of the non isotope element.
The atomic mass number of an isotope represents the sum of the numbers of neutrons and of protons in a nucleus of the isotope. For elements with more than one stable (non-radioactive) isotope naturally occurring, the atomic mass of the element as shown in a reference is the weighted average of the atomic masses of all the naturally occurring isotopes, weighted by the fraction that each isotope constitutes of the total natural supply of the element.
isotope
All isotopes of an element have the same number of protons, otherwise they would not be the same element. What varies is the number of neutrons, they can be more or less than in the stable isotope(s) of the element.
Isotopes are species of atoms having same atomic no. but different atomic masses. So an isotope has either lesser or more neutrons than the usual atom of the element ( often called the most abundant isotope).
An atom of a certain element with a different number of neutrons compared with the common form of the element is called an isotope. Isotopes have the same number of protons and electrons in an atom, but a different number of neutrons (which means that they have a different atomic mass number).
It is an isotope of the element.
Not by itself. The mass number is the sum of the numbers of protons and neutrons in he nucleus for each isotope of the element, or for elements with more than one stable isotope is an average depending on the natural abundance of the stable isotopes of the element.
When an element's isotope is different than the common isotope or if it is relevant to the matter at hand such as in nuclear chemistry, the element is given a prefix in superscript to indicate its isotope
An element will radiate if it is an isotope of the original element, this means that it has more neutrons in its nucleus than it does protons. This causes the element to become unstable and thus causes it to let out radiation in order to make it stable.
To find out the number of electrons in an element you must add the protons and neutrons and subtract that number with the atomic mass, this will determine the amount of electrons because the unknown element could be an isotope and have more than the normal amount of electrons of the non isotope element.
All known elements in nature - or most of them at any rate - have more than one isotopes.
The number of neutrons in the nucleus of an atom of any isotope of an element is equal to the "atomic mass number", which is usually stated in a number immediately after a hyphen at the end of the element name in the name of the isotope, minus the atomic number. Because most elements have more than one stable isotope, the average number of neutrons in the mixture of isotopes of an element that occurs naturally is usually not an integer.
The atomic mass number of an isotope represents the sum of the numbers of neutrons and of protons in a nucleus of the isotope. For elements with more than one stable (non-radioactive) isotope naturally occurring, the atomic mass of the element as shown in a reference is the weighted average of the atomic masses of all the naturally occurring isotopes, weighted by the fraction that each isotope constitutes of the total natural supply of the element.