Name Section Advance Study Assignment: The Alkaline Earths and the Halogens 1. A

Question

Name Section Advance Study Assignment: The Alkaline Earths and the Halogens 1. As pure elements, all of the halogens are diatomic molecular species. Their melting points are: F, 54 K: Cl2. 172 K; Bry, 266 K; and I,, 387 K. Using the Periodic Table, predict as best you can the molecular formula of elemental astatine, At, the only radioactive element in this family. Also predict whether it will be a solid, liquid, or gas at room temperature. Elemental formula: Phase at room temperature: 2. Substances A, B, and Ca can all act as oxidizing agents. In solution, A, is green, B, is yellow, and C, is red In the reactions in which they participate, they are reduced to A , BT, and C" ions, all of which are colorless When a solution of C2 is mixed with one containing B ions, the color changes from red to yellow. reece: Which species is oxidized? Which is reduced? 2 ions, the color remains red. When a solution of C, is mixed with one containing A Is C, a better oxidizing agent than Aj?e Is C, a better oxidizing agent than B,? Arrange Az, B,, and C2 in order of increasing strength as an oxidizing agent strongest oxidizing agent weakest oxidizing agent

Explanation / Answer

1. Astatine formula = At

It will be a solid at room temperature

2. In the given reaction,

When C2 is mixed with B-

species oxidized = B-

species reduced = C2

when C2 is mixed with A-

Is C2 a better oxidizing agent than A2 = No

Is C2 a better oxidizing agent than B2 = Yes

Order in terms of increasing oxidizing strength

B2 < C2 < A2

better reducing agent = C2

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.