Therefore, they rarely react with other elements since they are already stable. They are the most stable due to having the maximum number of valence electrons their outer shell can hold. The noble gases are the chemical elements in group 18 of the periodic table. Most of the elements important in biology need eight electrons in their outermost shell in order to be stable, and this rule of thumb is known as the octet rule. In general, atoms are most stable, least reactive, when their outermost electron shell is full. How many valence electrons shows that an atom is stable? 1 How many valence electrons shows that an atom is stable?.We hope you enjoyed studying this lesson and learned something cool about Valence Electrons in Beryllium! Join our Discord community to get any questions you may have answered and to engage with other students just like you! Don't forget to download our App to experience our fun VR classrooms - we promise it makes studying much more fun□ REFERENCE No, Beryllium does not contain 6 valence electrons. How Many Valence Electrons Does Beryllium Lose?īeryllium could lose 2 valence electrons. The electronic configuration of Beryllium comes down to 1s 2 2s 2 hence, the Beryllium valence electrons would be 2.The last shell of the atomic orbital is known as the valence shell. The total number of protons equals the total number of electrons.According to electron configuration, it shows that Beryllium has two electrons in the last orbit therefore, the valence electron would be 2. You have to do the electron configuration then where Beryllium would come down to 1s 2 2s 2.Hence, Beryllium has a total of four electrons. As we all know by now, electron number = proton number therefore, check the periodic table, and you would find that the atomic number of Beryllium is 4. For this, you have to know the total proton number of Beryllium as well.
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