1. Why is it possible to use the periodic table to predict that the first ionization energy of Mg is greater than the first ionization energy of K? Why is it not possible to use the periodic table to predict whether the first ionization energy of K or Sr is larger? [Predict = decide without looking at numerical values]
2. How does the Bohr theory of the atom explain the fact that the spectrum obtained from a glowing tube of hydrogen gas displays discrete lines and not a continuous rainbow of colors?
3. Why do we find CF4 as a stable molecule and not CF3 or CF5?
4. Is the C2ClF molecule polar or non-polar? Describe in detail how you arrived at your conclusion.
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