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1 year ago

Chlorine, Cl2,is a gas at room temperature, but bromine, Br2, is a liquid. Why?

Chemistry

1 answer:

Alja [10]1 year ago

3 0

<em>Explanation</em>

Halogens => Cl, Br, I, F => exist as diatomic molecules at room temperature and atmospheric conditions.

F2 and Cl2 are gases

Br2 is liquid

I2 is solid

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vitfil [10]

Each species is a separate type of organism.

A species is a group of creatures that share similar traits. The same species of organisms are capable of sexual reproduction as well as interbreeding and producing fertile offspring. It is a fundamental unit of taxonomy and classification.
The system is divided into seven categories: Kingdom, Phylum or Division, Class, Order, Family, Genus, and Species. Kingdom is the most inclusive category.
In a group, many types of an organism can be included even if they do not share the same traits. But species is a group of organisms that share similar traits.
For example, human beings are species as they are all alike in physical features, way of reproduction, etc. But the animal is considered a group because it included a variety of living beings.

Therefore, Each species is not considered a group.

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An element is a pure substance that is defined by the number of protons in which is defined as the atomic number

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If this is a true or false question then the answer is true.

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3 years ago

Which of the following is a galvanic cell?

sladkih [1.3K]

C. Aluminum (Al) oxidized, zinc (Zn) reduced

<h3>Further explanation</h3>

Given

Metals that undergo oxidation and reduction

Required

A galvanic cell

Solution

The condition for voltaic cells is that they can react spontaneously, indicated by a positive cell potential.

$\large {\boxed {\bold {E ^ ocell = E ^ ocatode -E ^ oanode}}}$

or:

E ° cell = E ° reduction-E ° oxidation

For the reaction to occur spontaneously (so that it E cell is positive), the E° anode must be less than the E°cathode

If we look at the voltaic series:

The standard potential value(E°) from left to right in the voltaic series will be greater, so that the metal undergoing an oxidation reaction (acting as an anode) must be located to the left of the reduced metal (as a cathode)

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Otrada [13]

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