Uranium has 29 known isotopes and isomers (3 natural and 26 artificial). Two other isotopes are not still confirmed.
For all elements heavier than Bismuth, all their isotopes are radioactive.
There generally isn't a problem; the more protons an atom has, the more neutrons it takes to glue them together. A Helium atom has two protons and generally two neutrons; in every other stable atom, there are more neutrons than protons. There are isotopes of elements with fewer-than-normal numbers of neutrons; these isotopes are generally unstable and radioactive, and will generally decay into other elements.
Yes. Both carbon atoms have 6 protons. However, the 12C atom has 6 neutrons while the 13C atom has 7 neutrons :)
Isotopes.
This is the "mass number" of the atom, indicating relative mass of an isotope.For example uranium-235 (235U) is a lighter atom than uranium-238 (238U) because while both isotopes have 92 protons (the atomic number), the first has 3 fewer neutrons.
It wouldn't change the reaction rate etc. chemically. However, it would be physically heavier and if too many neutrons are added then the atom will become radioactive and unstable, using beta emission to stabilise itself. and i thank my wonderful physics teacher for teaching me that =]
Not always. Some atoms of the same element with different numbers of neutrons are radioactive, whereas the other atoms are not.
some atoms are heavier than others as they have higher relative Atomic Mass, by which is equals to proton number + number of neutrons in an atom, according to the Periodic Table of the elements
There generally isn't a problem; the more protons an atom has, the more neutrons it takes to glue them together. A Helium atom has two protons and generally two neutrons; in every other stable atom, there are more neutrons than protons. There are isotopes of elements with fewer-than-normal numbers of neutrons; these isotopes are generally unstable and radioactive, and will generally decay into other elements.
The vast majority
The gaseous element with 5 valence electrons and fewer neutrons than sodium is Boron. Boron has 5 protons and 5 neutrons, while sodium has 11 protons and about 12 neutrons.
yes, all normal atoms do, but there are things called ions and isotopes that have fewer or more electrons and neutrons
Yes. Both carbon atoms have 6 protons. However, the 12C atom has 6 neutrons while the 13C atom has 7 neutrons :)
Carbon 12 and carbon 14 are atoms of carbon, different isotopes of the element. Carbon owes its chemical identity, indeed, its elemental identity, to the number of protons in its nucleus. There are 6 of them. No more, no less. Carbon 12 has 6 protons and 6 neutrons. Carbon 14 has 6 protons and 8 neutrons. Carbon 14 has fewer protons than neutrons.
Isotopes.
This is the "mass number" of the atom, indicating relative mass of an isotope.For example uranium-235 (235U) is a lighter atom than uranium-238 (238U) because while both isotopes have 92 protons (the atomic number), the first has 3 fewer neutrons.
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).
Every element has a set number of protons. Always. Electrons are determined by the charge on the atom. If it is positive, it has fewer electrons than protons; if it is negative, it has more electrons than protons. Isotopes are atoms with different numbers of neutrons. So, neutral carbon-12 has 6 protons, 6 electrons, and 12 neutrons. Likewise, neutral carbon-14 has 6 protons, 6 electrons, and 14 neutrons. Carbon-12 and carbon-14 are isotopes