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Chemistry Past Questions and Answers

Waec Chemistry Questions

Question 1396:

Which of the following arrangements indicates the correct decreasing order of ionization energy of period 3 elements?

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A Na, Al, P, Cl
B Cl, P, Al, Na
C Na, P, Cl, Al
D Al, Na, P, Cl

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Question 1397:

Which of the following metals has the strongest metallic bond?

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A \(_{13}Al\)
B \(_{19}K\)
C \(_{12}Mg\)
D \(_{11}Na\)

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Question 1398:

Which of the following substances does not have van der Waals' forces?

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A Copper
B Graphite
C Neon
D Iodine crystals

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Question 1399:

The oxidation number of X in \(XO_{4}^{3+}\) is

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A +1
B +3
C +4
D +5

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Question 1400:

The ionization energy is affected by the following factors except

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A Distance of the outermost electron(s) from the nucleus
B Size of the positive nuclear charge
C Ability to attract shared electron(s)
D Screening effect of the inner electron(s)

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