ionic bonding

Question 1

how are ions arranged in a compound

Answer 1

giant ionic lattice

Question 2

what is the top number

Answer 2

mass number

Question 3

what is the bottom number

Answer 3

atomic number

Question 4

what the period (row) equate to

Answer 4

number of shells

Question 5

what does the group (column) equate to

Answer 5

no. of electrons in outer shell

Question 6

what is an ionic bond

Answer 6

the electrostatic attraction between oppositely charged ions

Question 7

what is the charge of a non-metal ion

Answer 7

negative

Question 8

what is the charge of a metal ion

Answer 8

positive

Question 9

charge of ammonium ion (NH4)

Answer 9

1+

Question 10

charge of hydroxide ion (OH)

Answer 10

1-

Question 11

charge of nitrate ion (NO3)

Answer 11

1-

Question 12

charge of sulphate ion (SO4)

Answer 12

2-

Question 13

charge of carbonate ion (CO3)

Answer 13

2-

Question 14

how to show an ionic bond

Answer 14

dot and cross diagram

Question 15

why do ionic bonds have high melting points

Answer 15

• ionic bonds are very strong
• in a giant ionic lattice there are lots bonds
• requires lots of energy to break

Question 16

why do ionic compounds only conduct electricity when molten

Answer 16

because ions can move freely

Question 17

why are giant ionic structures brittle

Answer 17

• when hit, layers of ions slide over each other
• so ions with the same charge end up next to each other
• like charges repel
• structure breaks