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Ionization Energies

Which of the ...

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Which of the following is arranged in order of increasing second ionisation energy? Options: C < N < O < F F < C < N < O C < N < F < O F < O < N < C Here why wont the second opt. come , cause F will easily lose 1 electron and become 1/2 filled, and C would lose electron and become 2s2?

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Q. The electrons identified by quantum numbers

n

l

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n = 4, l = 0

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n = 3, l = 1

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(ii) n = 4, l = 0
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Q. Question 1
Which of the following statements is not a correct statement about the trends when going from left to right across the periods of the periodic table?

1. The elements become less metallic in nature.
2. The number of valence electrons increases.
3. The atoms lose their electrons more easily.
4. The oxides become more acidic.

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