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Take the Atomic Weight, and subtract the Atomic Number. For example, Helium is atomic weight 4 (it has 4 nucleons, which may be protons or neutrons). It's atomic number is 2, so it has 2 protons. 4 - 2 = 2, so it has 2 neutrons. Another example: Lead (Pb) atomic number is 82. Atomic weight is 207.
Subtract 207 - 82 = 125, so lead has 82 protons and 125 neutrons.
What else can I help you with?
Isotopes of an element have a different number of?
neutrons
What are the element number of neutrons?
Number of Neutrons = Mass number - Number of Protons
What are atoms that have the same element but different neutrons?
IsotopesThe number of protons in the nucleus of an atom determines the element. The number of neutrons can vary. If two atoms of the same element have a different number of neutrons in their nuclei, they are isotopes of that element.
One isotope for a particular element is distinguished from another by the number of?
protons and neutrons in its nucleus. The number of protons determines the element, while the number of neutrons can vary to create different isotopes of that element.
Does changing the number of neutrons affect what type of element it is?
No. You have to change the number of protrons.(Changing the number of neutrons changes the isotope of the element, but it is still the same element. However, changing the number of neutrons will often result in instability, causing a radioactive decay sequence, which often results in a change in element.)
Finding the number of neutrons in an element?
To find the number of neutrons in an element, subtract the atomic number (number of protons) from the mass number (sum of protons and neutrons). Neutrons do not carry a charge and help stabilize the nucleus of an atom.
What is the number of neutrons for a specific element equal to?
The average number of neutrons that a specific element has is equivilent to the element's atomic mass minus the that elements atomic number. For example Helium has 2 neutrons because its atomic mass (4) minus the atomic number (2) is 2.
What is the name number tells you the amount of protons and neutrons in an element?
Number of protons + Number of neutrons = Mass number(number of nucleons)
How do you find the number of neutrons in a element using only mass and the element name?
To find the number of neutrons in an element, subtract the atomic number (number of protons) from the atomic mass number (rounded mass of the element). The atomic number can be determined from the element's position on the periodic table.
If an element has a mass number of 208 and an atomic number of 83 how many neutrons does the element have?
To determine the number of neutrons, subtract the atomic number from the mass number. In this case, 208 - 83 = 125 neutrons.
Does all the isotopes of an element have the same number of neutrons?
No, the number of neutrons vary, but protons and electrons are static among an element.
What is the number of neutrons in the element radium?
Radium has 138 neutrons.
