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3361

Atomic orbital is

  • A. the circular path through which electrons revolve round the nucleus
  • B. a region around the nucleus where electrons are most likely to be found
  • C. the path around the nucleus through which electrons move
  • D. the path around the nucleus through which protons move
View Answer & Discuss (1) WAEC 2017
3362

The property of elements which increases down a group of the periodic table is

  • A. electronegativity
  • B. electron affinity
  • C. ionic radius
  • D. ionization energy
View Answer & Discuss (1) WAEC 2017
3363

The reason for the decrease in the atomic size of elements across a period is that

  • A. nuclear charge increases while the outermost electrons are drawn closer to the nucleus
  • B. nuclear charge decreases while the outermost electrons are drawn closer to the nucleus
  • C. valence electrons increase across the period while the valence shell remains constant
  • D. nuclear charge decreases while the distance of the valence shell from the nucleus is increasing
View Answer & Discuss WAEC 2017
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3364

The oxidation number of nitrogen in \(Pb(NO_{3})_{2}\) is

  • A. +2
  • B. +3
  • C. +4
  • D. +5
View Answer & Discuss (1) WAEC 2017
3365

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

  • A. Na, Al, P, Cl
  • B. Cl, P, Al, Na
  • C. Na, P, Cl, Al
  • D. Al, Na, P, Cl
View Answer & Discuss (3) WAEC 2017
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