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vovangra [49]
3 years ago
10

Which elements forms an ion with a 1– charge?

Chemistry
1 answer:
Feliz [49]3 years ago
3 0

Answer:

F - Cl - Br - I - At - Ts

Explanation:

All the halogens, are the elements that forms a ion with a -1 charge.

The elements from group 17 in the Periodic Table are the one that has 7 electrons of valence. They need only 1 e⁻  to have the closest noble gas conformation so, they can comply with the octet rule.

This is an example:

Cl₂ (g) + 2e⁻  →  2Cl⁻

Chlorine which is a diatomic gas, gains 2 electrons to make 2 moles of chloride (in order to the balance the reaction)

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Degger [83]

The volume of H₂ : = 15.2208 L

<h3>Further explanation</h3>

Given

Reaction

2 As (s) + 6 NaOH (aq) → 2 Na₃AsO₃ (s) + 3 H₂ (g)

34.0g of As

Required

The volume of H₂ at STP

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= mass : Ar

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