Electronegativity and bond polarity

Question 1

electronegativity is

Answer 1

the ability of an atom to attract a bonding pair of electrons

Question 2

in general, the eletronegativity of elements…………….down a group and…………………….from left to right across a period

Answer 2

decreases

increases

Question 3

if two atoms of the same element are bonded together by the overlap of atomic orbitals, then the distribution of electron density between the two nuclei will be………………………..
this is because…………….

Answer 3

• symmetrical

- because the ability of each atom to attract a bonding pair of electrons is identical

Question 4

if the two atoms bonded together are from differnet elements that have differnet electronegativities, then the distribution of electron density will………………..
this is because………….

Answer 4

• not be symmetrical

- because the atoms will have different abilities to atrcat a bonding pair

Question 5

a polar covalent bond (polar bond) is

Answer 5

a type of covalent bond between two atoms where the bonding electrons are equally distributed. because of this, one atom carries a slight negative charge and the other a slight positive charge

Question 6

the two ideal of bonding are

Answer 6

• pure 100% covalent

- pure 100% ionic

Question 7

polar covalent bonds are….bonds with some degree of…….character

Answer 7

covalent

ionic