ionic bonding Flashcards
1
Q
how are ions arranged in a compound
A
giant ionic lattice
2
Q
what is the top number
A
mass number
3
Q
what is the bottom number
A
atomic number
4
Q
what the period (row) equate to
A
number of shells
5
Q
what does the group (column) equate to
A
no. of electrons in outer shell
6
Q
what is an ionic bond
A
the electrostatic attraction between oppositely charged ions
7
Q
what is the charge of a non-metal ion
A
negative
8
Q
what is the charge of a metal ion
A
positive
9
Q
charge of ammonium ion (NH4)
A
1+
10
Q
charge of hydroxide ion (OH)
A
1-
11
Q
charge of nitrate ion (NO3)
A
1-
12
Q
charge of sulphate ion (SO4)
A
2-
13
Q
charge of carbonate ion (CO3)
A
2-
14
Q
how to show an ionic bond
A
dot and cross diagram
15
Q
why do ionic bonds have high melting points
A
- ionic bonds are very strong
- in a giant ionic lattice there are lots bonds
- requires lots of energy to break
