Element whose salt do not impart colour to flame test is:
Correct answer: A. Be
- A. Be
- B. Cs
- C. Ca
- D. K
Explanation
Option A is correct as Beryllium is one of the 2 alkaline earth metals that does not impart colour to flame test. Cs gives violet flame, Ca gives brick red flame and K gives lilac flames to flame test.
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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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