QuestionJune 17, 2025

Which of the following features are common to the elements in group VIIIA (18) of the periodic table? Select all that apply. Unfilled outer electron shell D Low boiling points D D High ionization energies High electronegativities OHigh melting points DVery low electronegativities Filled outer electron shell Relatively unreactive

Which of the following features are common to the elements in group VIIIA (18) of the periodic table? Select all that apply. Unfilled outer electron shell D Low boiling points D D High ionization energies High electronegativities OHigh melting points DVery low electronegativities Filled outer electron shell Relatively unreactive
Which of the following features are common to the elements in group VIIIA (18) of the periodic table? Select all that apply. Unfilled outer electron shell D Low boiling points D D High ionization energies High electronegativities OHigh melting points DVery low electronegativities Filled outer electron shell Relatively unreactive

Solution
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Answer

Low boiling points, High ionization energies, Filled outer electron shell, Relatively unreactive Explanation 1. Identify Group VIIIA Elements Group VIIIA (18) consists of noble gases: Helium, Neon, Argon, Krypton, Xenon, and Radon. 2. Analyze Electron Configuration Noble gases have a **filled outer electron shell**, making them stable and **relatively unreactive**. 3. Evaluate Physical Properties Noble gases generally have **low boiling points** due to weak intermolecular forces. 4. Assess Ionization Energy Noble gases have **high ionization energies** because removing an electron from a filled shell requires significant energy. 5. Examine Electronegativity Noble gases have **very low electronegativities** as they do not tend to attract electrons due to their stability.

Explanation

1. Identify Group VIIIA Elements<br /> Group VIIIA (18) consists of noble gases: Helium, Neon, Argon, Krypton, Xenon, and Radon.<br /><br />2. Analyze Electron Configuration<br /> Noble gases have a **filled outer electron shell**, making them stable and **relatively unreactive**.<br /><br />3. Evaluate Physical Properties<br /> Noble gases generally have **low boiling points** due to weak intermolecular forces.<br /><br />4. Assess Ionization Energy<br /> Noble gases have **high ionization energies** because removing an electron from a filled shell requires significant energy.<br /><br />5. Examine Electronegativity<br /> Noble gases have **very low electronegativities** as they do not tend to attract electrons due to their stability.
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