Question

question 7 (1 point)
which of the following molecules is known for having a triple bond?
oxygen
hydrogen
nitrogen
carbon dioxide
argon
question 8 (1 point)
explain the concept of polarity
electrons spend more time with the nucleus than in their shells.
electrons spend more time with one atom than another.
electrons move to a different atom, creating a very uneven distribution
electrons are in excess in one atom.
electrons alter their charge to form a polar molecule.

Explanation:

Question 7

• Oxygen (\(O_2\)) has a double bond (\(O = O\)).
• Hydrogen (\(H_2\)) has a single bond (\(H - H\)).
• Nitrogen (\(N_2\)) has a triple bond (\(N\equiv N\)).
• Carbon dioxide (\(CO_2\)) has double bonds (\(O = C = O\)).
• Argon is a noble gas and exists as single - atoms with no bonds.

• Polarity in a molecule occurs when electrons spend more time with one atom than another. This leads to a partial negative charge (\(\delta-\)) on the atom with more electron density and a partial positive charge (\(\delta+\)) on the atom with less electron density.
• Electrons do not spend more time with the nucleus (this is not related to molecular polarity).
• When electrons move to a different atom (complete transfer), it forms an ionic bond, not a polar covalent bond (which is related to polarity).
• Electrons being in excess in one atom (like in ions) is not the concept of polarity in covalent molecules.
• Electrons do not alter their charge to form a polar molecule.

Answer:

nitrogen

Question 8