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Ranking By Ionization Energy

This worksheet covers Ranking By Ionization Energy, which is part of the Periodic Trends module in the Chemistry course. Practice problems are designed to strengthen key concepts and build confidence.

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Ranking By Ionization Energy

Periodic Trends • Chemistry

Set 5 — Mastery

Which element has the highest ionization energy in the following list: $Na$ , $Mg$ , $Al$ , $Si$ ?

$Na$

$Mg$

$Al$

$Si$

Which of the following elements has the lowest ionization energy: $Cl$ , $Br$ , $I$ , $F$ ?

$Cl$

$Br$

$I$

$F$

Arrange the following elements in order of increasing ionization energy: $K$ , $Ca$ , $Ar$ , $Cl$ .

$K < Ca < Cl < Ar$

$K < Ca < Ar < Cl$

$Ca < K < Cl < Ar$

$Ar < Cl < Ca < K$

Which of the following elements has a higher ionization energy: $Be$ or $B$ ?

$Be$

$B$

$They$ are equal

$Cannot determine

Among the following elements, which one has the highest ionization energy: $Li$ , $Na$ , $K$ , $Rb$ ?

$Li$

$Na$

$K$

$Rb$

Which of the following elements would require the most energy to remove an electron: $N$ , $O$ , $F$ , $Ne$ ?

$N$

$O$

$F$

$Ne$

Which element shows an increase in ionization energy when moving from $N$ to $O$ ?

$N$

$O$

$Both$

$Neither$

Which of the following elements has the lowest ionization energy: $C$ , $N$ , $O$ , $F$ ?

$C$

$N$

$O$

$F$

In the context of periodic trends, which of the following statements is true regarding ionization energy?

$Ionization$ Energy increases down a group.

$Ionization$ Energy decreases across a period.

$Ionization$ Energy increases across a period.

$Ionization$ Energy is the same for all elements.

10.

Which element in the third period has the highest ionization energy: $Na$ , $Mg$ , $Al$ , $Si$ , $P$ , $S$ , $Cl$ , $Ar$ ?

$Cl$

$Ar$

$S$

$P$

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