give reason why the electron affinity values of Be, Mg and noble gases are zero and those of N and P are very low.
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Answer:
the orbitals are full occupied!!
Explanation:
Their 2s and 3s-orbitals are fully occupied
Their first ionisation - energies are very small
Their electronegativity are very high
Their electro- affinity are very high in Mg²+ and Be²+.
The amount of energy released when an electron is added to an isolated neutral atom in its lowest energy state to produce an anion is called its electron affinity
Electron affinity values generally increase on moving from left to right along a period due to to the decrease in the atomic size and the increase in its effective nuclear charge
Nitrogen and P has high atomic number so there electron affinity is low.
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