CHEM103 / CHEM 103 Module 4:
(Latest Update 2025 / 2026) General Chemistry I with Lab | Questions & Answers | Grade A | 100% Correct - Portage Learning
Question:
- Arrange the following elements in a vertical list from largest (top) to
smallest (bottom) atomic size: Cl, F, Br
- Arrange the following elements in a vertical list from lowest (top) to highest
(bottom) electronegativity: S, P, Si
- Arrange the following elements in a vertical list from highest (top) to lowest
(bottom) ionization energy: S, Te, Se
Answer:
- Br Cl F
- Si P S
- S Se Te
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Question:
Write the subshell electron configuration (i.e.1s2 2s2, etc.) for the V23 atom and then identify the last electron to fill and write the 4 quantum numbers (n, l, ml and ms) for this electron.
Answer:
V23 = 1s2 2s2 2p6 3s2 3p6 4s2 3d3 :n=3, l=2, ml = 0, ms = +1/2
Question:
- List and explain which of the following atoms holds its valence electrons
more tightly.Br or As
- List and explain which of the following atoms more easily forms a positive
ion.Si or S
Answer:
- Br holds its valence electrons more tightly than As since electronegativity
increases as you go to the right in a period which means that Br which is further to the right in the period has the higher electronegativity and therefore the higher attraction for its valence electrons.
- Si forms a positive ion more easily than S since ionization potential
increases as you go to the right in a period which means that Si with the lower ionization potential requires less energy to lose an electron and form a positive ion so it does so more easily.
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