Choose the correct statement:a.Ionization energy decreases but electron affinity increasesb.Ionization energy and electron affinity increases across a periodc.Ionization energy increases but electron affinity decreases along a periodd.Both decreases along a period
Question
Choose the correct statement:a.Ionization energy decreases but electron affinity increasesb.Ionization energy and electron affinity increases across a periodc.Ionization energy increases but electron affinity decreases along a periodd.Both decreases along a period
Solution
The correct statement is b. Ionization energy and electron affinity increases across a period.
Here's why:
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Ionization Energy: This is the energy required to remove an electron from an atom. As we move across a period from left to right on the periodic table, the number of protons in the nucleus increases, which means the positive charge of the nucleus increases. This stronger nuclear charge pulls the electrons in the atom closer to the nucleus, making it harder to remove an electron. Therefore, ionization energy increases across a period.
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Electron Affinity: This is the energy change when an electron is added to an atom. As we move across a period from left to right, the atomic radius decreases, which means electrons are closer to the nucleus and more strongly attracted to the center. Therefore, atoms are more likely to accept an electron, meaning electron affinity increases across a period.
Similar Questions
Across a period electron affinity decreasesQuestion 18Answera.Falseb.True
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