Which one does not give borax bead test_________________?
Correct answer: B. Barium sulphate
- A. Copper sulphate
- B. Barium sulphate
- C. Cobalt sulphate
- D. Nickel sulphate
Explanation
The borax bead test gives characteristic colours mainly with transition-metal ions, such as copper, cobalt and nickel. Barium sulfate does not produce the characteristic coloured bead, so students who select a transition-metal sulfate may be confusing the colour of the salt with the colour produced in the borax bead.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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