The systematic name for the compound Pz Clg is diphosphorus octachloride potasside tetrachlorine phosphorous tetrachloride potassium(IV) chloride Question 35 (1 point) Which of the following elements has an electron configuration of [522s22p6352? Ga Na Mg
The Correct Answer and Explanation is:
Let’s break this down and answer both parts of your question.
Part 1: Systematic Name for PzClg
It seems there’s a typo in the chemical formula “Pz Clg”. Let’s interpret what you might mean:
- If Pz is meant to represent P₂ (diphosphorus)
- And Clg is likely Cl₈ (octachloride)
Then the correct formula is probably P₂Cl₈.
Correct Systematic Name:
The name for P₂Cl₈ is diphosphorus octachloride.
So the correct name among the options is:
✅ diphosphorus octachloride
All the other names include elements (potassium, chlorine in ionic forms, oxidation states, etc.) that don’t appear in the original molecular formula.
Part 2: Electron Configuration Question
Which of the following elements has an electron configuration of [Ne]3s²3p¹?
Options:
A. Ga
B. Na
C. Mg
Let’s analyze the given electron configuration:
[Ne]3s²3p¹
This configuration means:
- Starts with Neon core: 1s² 2s² 2p⁶ = [Ne]
- Then adds 3s² → 2 electrons
- And 3p¹ → 1 electron
- Total electrons = 10 (Ne) + 2 (3s) + 1 (3p) = 13 electrons
So the atomic number is 13, which corresponds to Aluminum (Al). However, Aluminum is not listed in the options.
Let’s look at the options instead:
A. Gallium (Ga)
Atomic number = 31
Electron configuration: [Ar] 3d¹⁰ 4s² 4p¹ → ❌ Doesn’t match
B. Sodium (Na)
Atomic number = 11
Electron configuration: [Ne] 3s¹ → ❌ Doesn’t match
C. Magnesium (Mg)
Atomic number = 12
Electron configuration: [Ne] 3s² → ❌ Doesn’t match
✅ None of the choices have [Ne]3s²3p¹ as their configuration.
Correct Answer (based on given configuration): Aluminum (Al)
But if you must choose from the listed options, none are correct.
Conclusion:
- The correct name for P₂Cl₈ is diphosphorus octachloride
- The element with configuration [Ne]3s²3p¹ is Aluminum, not Ga, Na, or Mg
Explanation
The first question tests your understanding of chemical nomenclature. The compound written as “Pz Clg” seems like a typographical error. When corrected to P₂Cl₈, it contains two phosphorus atoms and eight chlorine atoms. According to IUPAC naming rules for molecular compounds, prefixes like “di-” for two and “octa-” for eight are used. Therefore, the correct name is diphosphorus octachloride. The other choices mention elements like potassium or oxidation states not found in the original molecular formula, making them incorrect.
The second question involves understanding electron configurations. The configuration [Ne]3s²3p¹ starts with the noble gas core of Neon, which accounts for 10 electrons. Adding 2 electrons in 3s and 1 in 3p totals to 13 electrons, which corresponds to the element with atomic number 13 — Aluminum (Al). However, aluminum is not listed among the options. Sodium (Na) has 11 electrons ([Ne]3s¹), magnesium (Mg) has 12 ([Ne]3s²), and gallium (Ga), with 31 electrons, has a more complex configuration: [Ar]3d¹⁰4s²4p¹. Since none match [Ne]3s²3p¹, the correct answer isn’t listed. This highlights the importance of understanding both the structure of electron configurations and the periodic table.
