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3726

The electronic configuration of element Z is 1s\(^2\) 2s\(^2\) 2p\(^6\) 3s\(^2\) 3p\(^1\). What is the formula of the compound formed between Z and tetraoxosulphate (VI) ion.

  • A. Z\(_3\)(SO\(_4\))\(_2\)
  • B. ZSO\(_4\)
  • C. Z\(_2\) SO\(_4\)
  • D. Z\(_2\)(SO\(_4\))\(_3\)
View Answer & Discuss JAMB 2019
3727

The hybridization in the compound \(CH_3 - CH_2 - C \equiv H\) is

  • A. sp\(^3\) and sp
  • B. sp
  • C. sp\(^2\)
  • D. sp\(^3\) and sp\(^2\)
View Answer & Discuss (20) JAMB 2019
3728

The following are isoelectronic ions except

  • A. Na\(^+\)
  • B. Mg\(^{2+}\)
  • C. Si\(^{2+}\)
  • D. O\(^{2+}\)
View Answer & Discuss (4) JAMB 2019
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3729

Consider the reaction: A + 2B\(_{(g)} \rightleftharpoons \) 2C + D\(_{(g)}\) (\(\Delta\)H = +ve)

What will be the effect of decrease in temperature on the reaction?

  • A. Rate of backward reaction will increase
  • B. The equilibrium constant will shift
  • C. Rates of forward and backward reactions are not affected
  • D. Rate of forward reaction will increase
View Answer & Discuss JAMB 2019
3730

A cell shorthand notation can be written as A / A\(^+\) // B\(^{2+}\) /B. The double slash in the notation represents the 

  • A. electrolyte
  • B. electrodes
  • C. salt bridge
  • D. solid - liquid interface
View Answer & Discuss (5) JAMB 2019
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