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Helium has a stable (full) valence shell (1s2) which means that it will have a high ionization energy (the energy required to remove an electron). In fact, helium has the highest ionization energy of any element. However, this does not mean that helium cannot form ions. It just means that it will require a lot of energy to do so and this does not happen under normal conditions.

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14y ago
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13y ago

The electronegativity of helium is so small that not even an easily ionized valence electron such as the one in a potassium atom can reach a more stable state by transferring to a helium molecule.

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13y ago

Even though non-metal stick to a metal forms an ionic bond, there is a restriction with the noble gases. Noble gases seldom ever to form bonds. Because helium is a noble gas, helium and potassium do not form a single bond.

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11y ago

Helium has completely filled orbitals and hence it will not react or form bonds.

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12y ago

Helium is a Nobel gas and nonreactive, so it is not likely to form bonds with any other element.

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11y ago

helium has completely filled orbitals and does not react with any element.

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Q: Why dont potassium and helium make an ionic bond?
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