Periodic Trends

Front

What determines the polarity of a bond?

Back

The difference in the electronegativities of the two atoms.

Front

What is electronegativity?

Back

Electronegativity is how good an atom is at attracting electrons.

Front

What is the electronegativity difference in the bonds of CH4?

Back

0.4

Front

What is the shielding effect?

Back

The shielding effect results in decreased attraction of electrons for the nucleus of an atom due to inner electrons blocking the attraction of valence electrons.

Front

How many electrons would a Nitrogen ion gain or lose?

Back

Nitrogen would gain 3 electrons.

Front

Define electronegativity in terms of atomic behavior.

Back

Electronegativity is a measure of an atom's ability to attract and hold onto electrons.

Front

What is the trend of electronegativity across a period in the periodic table?

Back

Electronegativity increases across a period from left to right.

Front

What is the trend of electronegativity down a group in the periodic table?

Back

Electronegativity decreases down a group.

Front

What is the significance of the octet rule in relation to electronegativity?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons, influencing their electronegativity.

Front

What is the relationship between atomic size and electronegativity?

Back

As atomic size increases, electronegativity generally decreases due to the increased distance between the nucleus and the valence electrons.