chemical bonding

Question 1

formation of ions

Answer 1

an ion is formed when an atom or a group of atoms loses/gains electrons to acquire an electrical charge

lose or gain to form duplet/octet config to achieve greater stability

Question 2

Positive ions

Answer 2

positive ions: Cations (think of it as pawsitive charge)

atoms LOSES electrons to form pos. ions

Question 3

negative ions

Answer 3

anions

atoms GAIN electrons to form neg. ions

Question 4

noble gases

Answer 4

tend to be unreactive

Question 5

ionic bonding
(for an example can refer to notebook)

Answer 5

–> metals and non-metals
–> when metallic atoms lose electrons, they form cations
–> ~ gain electrons, they form anions

Question 6

checklist for electronic config

Answer 6

1. size of ions: larger ions = more shells
2. no. of electrons transferred
3. charge of ions
4. stable electronic config
5. MUST have KEY

Question 7

dot and cross diagram (see notebook)

Question 8

covalent bonding
(see notebook for eg)

Answer 8

–> mainly between atoms of non metals
–> sharing of electrons between atoms occur in the valence shell.