Which of the following arrangements indicates the correct...
Which of the following arrangements indicates the correct decreasing order of ionization energy of period 3 elements?
Na, Al, P, Cl
Cl, P, Al, Na
Na, P, Cl, Al
Al, Na, P, Cl
Correct answer is B
As you move across a period, first ionization energy increases.
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Figure 1 above shows part of the periodic Table which of the elements belongs to the p-block?...