by Sunday | Oct 15 | Chemistry JAMB
A. magnesium and silver B. calcium and magnesium C. sodium and potassium D. calcium and sodium Correct Answer: Option B – calcium and magnesium
by Sunday | Oct 15 | Chemistry JAMB
A. neon and hydrogen B. nitrogen and helium C. helium and neon D. neon and nitrogen Correct Answer: Option A – neon and hydrogen
by Sunday | Oct 15 | Chemistry JAMB
A. 20 B. 25 C. 60 D. 75 Correct Answer: Option B – 25 Explanation Let the relative abundance of oxygen with mass 37 be x% ∴ The relative abundance of the isotope of mass 35 = (100 – x)%. Total mass of isotopes of mass 37 = 37x, while that of 35 = 35(100...
by Sunday | Oct 15 | Chemistry JAMB
A. electrovalency B. electron affinity C. electropositivity D. electronegativity Correct Answer: Option D – electronegativity
by Sunday | Oct 15 | Chemistry JAMB
A. spherical B. elliptical C. spiral D. circular Correct Answer: Option A = spherical
by Sunday | Oct 15 | Chemistry JAMB
A. 2 valence electrons B. 3 valence electrons C. 7 valence electrons D. 8 valence electrons Correct Answer: Option D – 8 valence electrons