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3 years ago

For a covalent bond to be polar, the two atoms that form the bond must have differing atomic weights.

Chemistry

1 answer:

sertanlavr [38]3 years ago

5 0

Answer:

differing electronegativity

Explanation:

the electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

in ionic bond one of the 2 atoms attract the electrons from the another and don't share it so the electronegativity must be different to make the attract tendency different.

so,

first, when we speak about bond we should deal with electronegativity not the number of the neutrons or the melting points

second if the two electonegativities are similar then the electrons will be shared as in covalent bonds. but if they are different one will lose the electrons for the another one

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3 years ago

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Sergio039 [100]

The reaction is not balanced

<h3>Further explanation</h3>

Given

Reaction

2Fe(s)+3O₂(g)⇒2Fe₂O₃(s)

Required

The number of atoms

Solution

In a balanced chemical equation, the number of atoms in the compound that reacts (the reactants and products) will have the same number

Reactants : Fe(s)+O₂(g)

Fe = 2 atoms

O = 3 x 2 = 6 atoms

Products : Fe₂O₃(s)

Fe = 2 x 2 = 4 atoms

O = 2 x 3 = 6 atoms

The reaction is not balanced because the number of Fe atoms is not the same

The balanced reaction should be:

4Fe(s)+3O₂(g)⇒2Fe₂O₃(s)

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3 years ago