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Beryllium 9 and Beryllium 10, however, beryllium 10 is not a fully stable element, and will decay in the course of something like 1 billion years, so is often considered stable nonetheless.
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∙ 13y ago
Wiki User
∙ 14y ago69
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How radioactive is hydrogen?
Hydrogen is not radioactive; its two most common isotopes are stable.
What are the names of some common alkalines?
Two most common alkaline earth metals are Beryllium and Magnesium, while the most common alkali hydroxide is sodium hydroxide.
What is the two most common isotope of sodium?
Sodium-23 and Sodium-22 are two common isotopes of sodium. Na-23 is the only stable isotope of Sodium. Na-22 is one of the two isomers (the other of which is Na-24). -V
What do most elements contain a mixture of?
Most elements contain a mixture of two or more isotopes.
How many neutrons are in a neutral beryllium atom?
An element is defined as atoms with the same number of protons (and thus electrons). Beryllium has 4 protons and 4 electrons. The number of neutrons is determined by subtracting the atomic number from the atomic mass. At least three isotopes of Beryllium have been identified but there is only one stable naturally occurring isotope - Beryllium 9. If there are 4 protons, there must be 9 - 4 = 5 netrons in this isotope. The other stable isotope is beryllium 10 with a half life of 2,700,000 years and this must have 6 neutrons. This does not occur naturally but is made in atomic reactors. The other identified isotope is Beryllium - 8 which is made in the same way but immediately splits into two helium nuclei. So for most naturally occurring Beryllium, there are 5 Neutrons.
How radioactive is hydrogen?
Hydrogen is not radioactive; its two most common isotopes are stable.
What are the names of some common alkalines?
Two most common alkaline earth metals are Beryllium and Magnesium, while the most common alkali hydroxide is sodium hydroxide.
How many electron valence does beryllium have?
The valence of beryllium is two.
What do two neutral isotopes of the element have in common?
The same numbers of protons and of electrons; the difference between isotopes is in the number of neutrons.
What do any two isotopes of an atom have in common?
The number of protons is the same.
Are all atoms of a particular element identical?
No, all elements have so called isotopes, meaning that the number of neutrons in the nucleus differs from the most common isotope. Hydrogen, for example, has three known isotopes: 11H, 12H, 13H, where the first one is the most common. They solely in their number of neutrons, not protons. The last two isotopes are less stable, hence less common.
What do two different neutral Isotopes have the same elements in common?
The proton and electron number are equal for all isotopes of the same specific element.
How many number of valance electrons in beryllium?
I might be wrong but: I know that beryllium has two electrons total and the first ring can only fit two electrons so the number of valance electrons is most likely two. Please correct me if I'm wrong.
How many electrons and isotopes are in a helium atom?
2 electrons. He-4 and He-3 are the two most occuring isotopes.
What is the two most common isotope of sodium?
Sodium-23 and Sodium-22 are two common isotopes of sodium. Na-23 is the only stable isotope of Sodium. Na-22 is one of the two isomers (the other of which is Na-24). -V
What do most elements contain a mixture of?
Most elements contain a mixture of two or more isotopes.
What two diffent neutral isotopes of the same element have in common?
The number of protons is identical.
