Natural beryllium isotopes are: Be-7, Be-9, Be-10.
no it is not
one
Beryllium has 4 protons and electrons and a variable number of neutrons, depending on the isotope. For other atomic properties see the links bellow.
The two most common isotopes of beryllium are beryllium-9 and beryllium-10. Beryllium-9 is stable and more abundant, while beryllium-10 is a radioactive isotope with a half-life of about 1.4 million years.
Magnesium has some similarities with beryllium.
You can tell that the beryllium atom is unstable because beryllium only has 2 valence electrons in its outer shell. An atom becomes stable when it has eight valence electrons, so in the case of beryllium it would have to lose those 2 electrons in its outer shell to become stable. often forming a cation with a 2+ charge.
yes, all elements have isotopes. some stable, some radioactive.
Obtain some beryllium;Take a picture of it.See the link bellow; but be sure that the fresh surface of beryllium is more white than the image.
Atomic mass numbers are not properties of elements overall, but only of particular isotopes of elements. The only stable element with an isotope with mass number 11 is boron. Beryllium and carbon also have isotopes with mass number 11, but these are radioactive.
Some examples are deuterium and tritium which are radioactive isotopes of hydrogen.
These isotopes are unstable and emit radiation.
Beryllium. And it's an element, not a chemical.