Why do atoms bond differently?

Question 1

What is an electronegative atom?

Answer 1

when an atom attracts a bonding pair of electrons, more strongly.

Question 2

Define electronegativity.

Answer 2

An atoms ability to attract a pair of electrons in a covalent bond.

Question 3

Which are the factors that affect electronegativity?

Answer 3

1. nuclear charge: The higher the nuclear charge, the higher the electronegativity of the atom.
2. size of atom ( atomic radius): The smaller the atom, the shorter the atomic radius, thus the more electronegative the atom is.

Question 4

Describe the trend in electronegativity in a group.

Answer 4

As we go down a group, the size of molecules increases, therefore, the nuclear radius also increases. This means that as we go down a group, electronegativity decreaseses.

Question 5

describe the trend in electronegativity, across a period.

Answer 5

Across a period, nuclear charge increases, therefore, electronegativity increases across a period.

Question 6

What determines wether a molecule is polar, or non - polar?

Answer 6

Wether it has a more electronegative atom, or not.

Question 7

whuch elemement is hydrogens electronegativity similar to?

Answer 7

Carbons.

Question 8

Which is the most electronegative element in the entire periodic table?

Answer 8

Flourine.

Question 9

What is a polar molecule?

Answer 9

A molecule which has a dipole and has a more electronegative atom, this leads to an uneven distribution of charges.

Question 10

What is a non-polar molecule?

Answer 10

A molecule which has an even distribution of charges, because electronegativity is the same in both atoms.

Question 11

What do atoms with a higher electronegativity have?

Answer 11

A dipole, and are polar,and have a negative charge ( Because elevtrons are more on their side)

Question 12

What do atoms with lower electronegativity have?

Answer 12

have NO dipole, and are non-polar,and have a negative charge.

Question 13

Which atom will always have the negative charge, and whihc atoms will always have the positive charge, when there is a more electronegative atom present.

Answer 13

The electronegative atom, will ALWAYS have the negative charge, and the dipole, and the least electronegative atom, will have the positive charge.

Question 14

What determines how polar a molecule is?

Answer 14

The higher the difference in electronegativity, the higher the polarity

and vice - versa.

Question 15

If molecules have polar bonds, on the same side of the central atom, then they are polar,
However,
If molecules have polar bonds on both sides of the central atom, then the molecule is non - polar, because the dipoles cancel each other out.

TRUE OR FALSE?

Answer 15

TRUE