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What element has A neutrons in its nucleus?
Only hydrogen has un-isotopic atoms without a neutron. Hydrogen can sometimes though have one or so neutrons in its isotopes. The other elements must have neutrons to keep the protons from repelling each other in the atom's nucleus.
Are they more than a single neutron in an atom?
yes (except for the two isotopes of hydrogen).
What is an element denser than helium?
EVERYTHING except hydrogen is denser than helium.
What causes the change in the atomic mass of an element?
Apart from a few, almost all elements have isotopes. They are almost similar except the number of neutrons they have.
How do chemical proprties of isotopes compare?
an isotope is a different form of that element. They just have different mass numbers/ atomic mass. Therefore having the same characteristics of the atom except for an increased/decreased number of neutrons. Isotopes have the same atomic number as each other.
What element has A neutrons in its nucleus?
Only hydrogen has un-isotopic atoms without a neutron. Hydrogen can sometimes though have one or so neutrons in its isotopes. The other elements must have neutrons to keep the protons from repelling each other in the atom's nucleus.
Are they more than a single neutron in an atom?
yes (except for the two isotopes of hydrogen).
Why is the atomtic mass of element an average mass?
The atomic mass of an element is the average of all the isotopes of that element that exist on this earth, either naturally or artificially. An isotope is an atom that differs in the number of neutrons that it would normally have (which is usually the same as the number of protons it has, except in the case of hydrogen).
What is the first element after hydrogen that which has a neutron?
Helium. All elements have neutrons except hydrogen.
How is average weight of atomic mass computed?
the average atomic mass is computed by summing all isotopic weights of the isotopes of that element and then dividing this by the the total number of isotopes of that element (note that isotopic mass is exactly the same as atomic weight, except for isotopes).
What do most elements contain a mixture of?
Most elements contain a mixture of isotopes, which are atoms of the same element with different numbers of neutrons. Isotopes can have different properties but behave similarly in chemical reactions due to their identical number of protons.
What is an element denser than helium?
EVERYTHING except hydrogen is denser than helium.
What causes the change in the atomic mass of an element?
Apart from a few, almost all elements have isotopes. They are almost similar except the number of neutrons they have.
What does the nucleus of every element contain?
Every nucleus of every element contains at least 1 proton. Every element except hydrogen also contains neutrons.
Is hydrogen gas a element?
Yes, hydrogen gas is a diatomic molecule composed of two hydrogen atoms bonded together. Hydrogen is an element on the periodic table, identified by the atomic number 1.
Is lathanides unstable?
Lathanides all lathanides have stable isotopes except promethium, promethium is also the only radioactive lathanide element, hope that helped.
How many are of shells are in sodium?
The first electron shell of any element is the one s shell. Every element except hydrogen has 2 one s electrons.
