halogens

Question 1

all elements in group 7 are non-____?

Answer 1

all elements in group 7 are non-metals

Question 2

how many electrons are in the outer energy level of a group 7 element?

Answer 2

7

Question 3

when group 7 elements react with eachother they share a pair of electrons, what type of bond is this?

Answer 3

when group 7 elements react, they form a covalent bond

Question 4

how do melting and boiling points change when we move down group 7?

Answer 4

melting and boiling points increase

Question 5

when group 7 elements react with other non-metals, what type of compound is formed?

Answer 5

a covalent compound is formed

Question 6

when group 7 elements react with metals, what type of compound is formed?

Answer 6

an ionic compound is formed

Question 7

when a group 7 atom reacts with a metal atom, what type of ion is formed?

Answer 7

an ion with -1 charge, because the group 7 atom gains one electron from the metal atom

Question 8

what is the name for group 7 ions?

Answer 8

halides

Question 9

what is the trend in reactivity as we move down group 7?

Answer 9

halogens get less reactive as we move down group 7

Question 10

as we move down group 7, the outer electrons are less attracted to the positive nucleus, why is this?

Answer 10

because the distance from the nucleus and outer shell increases

Question 11

moving down group 7, increased _____ and increased _______ mean elements are less reactive?

Answer 11

moving down group 7, increased distance and increased shielding means elements are less reactive

Question 12

a ____ reactive halogens can displace a ____ reactive halogens from an aqueous solution of its salt

Answer 12

a more reactive halogen can displace a less reactive halogen from an aqueous solution of its salt