Chemistry covLent bonds

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Which of the following substances has the lowest boiling point

CO

Which statement is true about a molecule of H2?

Each atom has an electron configuration like that of helium, The electrons from both atoms travel within the molecular orbital

Which compound most likely has the greatest bond energy?

HF; H—F bond length 92pm

If two covalently bonded atoms move closer than a distance of the bond length, the potential energy of the atoms

Increases

The bond between which pair of elements listed in the table below will most likely have the least ionic character

O and H

Non polar covalent bonds are not common because

One atom usually attracts electrons more strongly than the other

Bond energy is the energy is the energy

Required to break one mole of similar bonds in a compound

Bond length between two bonded atoms is

The separation at which their potential energy is minimum

A single covalent bond involves the sharing of

Two electrons

The electrons involved in the formation of a covalent bond are

Valence electrons


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