We are asked to arrange the given elements in order of decreasing first ionization energy.
Ionization energy is the energy required to remove an electron from a gaseous atom or ion.
The trend of the ionization energies of the elements can be observed in the periodic table:
• increases going from left to right of a period
• decreases going down a group
Rank these elements according to first ionization energy from highest to lowest energy.
B, C, N, O, F, Ne, Li, Be
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What scientific concept do you need to know in order to solve this problem?
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