What is special about having 8 outer electrons?

What is special about having 8 outer electrons?

The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds.

What do you describe elements with 8 electrons in their outermost shell?

Example 4: Helium (with its 2), neon, argon, and krypton (each with 8) have “filled” their outermost shells. They are the so-called inert or “noble” gases. They have no chemistry at all. Under normal conditions they do not interact with other atoms.

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What is the importance of 8 valence electrons?

The rule of 8 or the Octet rule is the tendency of atoms to have eight electrons in their valence shell. Eight electrons in this final shell allow atoms to be stable and non-reactive. Noble gases, for example, are some of the most non-reactive chemical elements one can find in nature.

Why does the outermost shell have 8 electrons?

The maximum capacity of a shell to hold electrons is 8. The shells of an atom cannot accommodate more than 8 electrons, even if it has a capacity to accommodate more electrons. This is a very important rule called the Octet rule.

What is the element with 8 electrons?

Oxygen is the eighth element in the periodic table, with the symbol O. This means that it has eight electrons in its neutral state.

What elements can have 8 electrons?

Elements with 8 electrons in their outer shell are called noble gases. They are placed in the 8A group of the periodic table. The elements are neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).

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What is the group that contains 8 electrons in their outer most shell *?

Group 0 elements – helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn) – have full outer shells. (Group 0 is sometimes called Group 8 – all the elements in the group have eight electrons in their outer shell, except for helium which only has two).

In which of the following does every atom has 8 electrons in its valence shell?

Argon an atom has 8 electrons in its valence shell but its valency is not 8. explain.

Does outer shell always have 8 electrons?

In general, atoms are most stable, least reactive, when their outermost electron shell is full. 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.

Which element rarely reacts because it has 8 electrons in its outer shell answers?

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Noble gases are the least reactive of all elements. That’s because they have eight valence electrons, which fill their outer energy level. This is the most stable arrangement of electrons, so noble gases rarely react with other elements and form compounds.

What element has 8 electrons 8 protons and 8 neutrons?

oxygen atom
An oxygen atom usually has 8 protons, 8 neutrons, and 8 electrons. Looking at the periodic table, oxygen has atomic number 8 and atomic weight 15.999.

What element contains 8 protons in its nucleus?

Oxygen by definition has 8 protons in its nucleus.