Questions: Electronic Structure and Chemical Bonding Deducing valence electron configuration from trends in successive... The first five ionization energies ( IE1 through IE5 ) of a Period 3 element have the following pattern: Make a reasonable guess about which element this is. Enter its chemical symbol below.

Electronic Structure and Chemical Bonding Deducing valence electron configuration from trends in successive... The first five ionization energies ( IE1 through IE5 ) of a Period 3 element have the following pattern: Make a reasonable guess about which element this is. Enter its chemical symbol below.
Transcript text: Electronic Structure and Chemical Bonding Deducing valence electron configuration from trends in successive... The first five ionization energies ( $\mathrm{IE}_{1}$ through $\mathrm{IE}_{5}$ ) of a Period 3 element have the following pattern: Make a reasonable guess about which element this is. Enter its chemical symbol below.
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Solution

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Solution Steps

Step 1: Identify the Ionization Energy Pattern

The given graph shows the first five ionization energies (IE₁ through IE₅) for a Period 3 element. The pattern indicates a significant jump between IE₃ and IE₄.

Step 2: Determine the Element's Group

A large increase in ionization energy typically occurs after the removal of the valence electrons. For Period 3 elements, this jump suggests that the element has three valence electrons, as the fourth ionization energy is significantly higher.

Step 3: Identify the Element

An element in Period 3 with three valence electrons is Aluminum (Al), which is in Group 13 of the periodic table.

Final Answer

The element is Aluminum (Al).

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