by Sunday | Oct 18 | Chemistry JAMB
The electron configuration of 22X²+ ion is? A. 1s2 2s22p6 3s2 3p6 4s2 3d2 B. 1s2 2s22p6 3s2 3p6 4s2 3d1 C. 1s2 2s22p6 3s2 3p6 D. 1s2 2s22p6 3s2 3p6 4s2 Correct Answer: Option D – 1s2 2s22p6 3s2 3p6 4s2 Explanation 22X²+ has 22 electrons but has been ionized to...
by Sunday | Oct 18 | Chemistry JAMB
A. Elements in the same period have the same number of valency electron B. The valence electron of the elements in the same period increase progressively across the period C. Elements in the same group have the same number of electron shells D. The non-metallic...
by Sunday | Oct 18 | Chemistry JAMB
A. shape of their particles B. number of particles in each state C. shape of the container they occupy D. degree of movement of their particles Correct Answer: Option D – degree of movement of their particles
by Sunday | Oct 18 | Chemistry JAMB
A. 0.203 B. 0.579 C. 2.030 D. 5.790 Correct Answer: Option B Explanation Mole fraction = Partial pressure of component/Total pressure of compound = 452/780 = 0.579
by Sunday | Oct 18 | Chemistry JAMB
A. 120 cm³ B. 200 cm³ C. 450 cm³ D. 750 cm³ Correct Answer: Option B – 200 cm³ Explanation From P1V1 = P2V2 1 X V1 = 1.5 X V2 ((1 X 300)/1.5) = V2 ∴ V2 = 200 cm³
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