Unit 3- Atomic Structure,bonding And Structure Of Solids

Question 1

Proton number

Answer 1

Number of protons in oje atom of an element

Question 2

Nucleon number

Answer 2

Sum of the number of protons amd neutrons in one atom of an element

Question 3

Isotopes

Answer 3

Atoms of the same element containing the same number of protons but different number of neutrons

Question 4

Lattice

Answer 4

A regular arrangement of particle present in a solid

Question 5

Proton

Answer 5

Relative mass=1

Relative charge=+1

Question 6

Neutron

Answer 6

Relative mass= 1

Relative charge=0

Question 7

Electron

Answer 7

Relative mass=1/2000

Relative charge =-1

Question 8

Electron arrangement

Answer 8

Shells

2,8,8,8,8

Question 9

Ionic bonding

Answer 9

Metal + non-metal

Lose or gain electrons for full outer shell

Question 10

Ionic formulae

Answer 10

Swap and drop

Question 11

Covalent bonding

Answer 11

Two non-metals

Pairs of electrons are shared

Question 12

Giant ionic structure

Answer 12

Sodium chloride
Ionic bonds
Lattice

Question 13

Giant covalent structure (macromolecular structure)

Answer 13

Diamond
Covalent bonds between carbon atoms
Graphite
SiO2

Question 14

Giant metallic structures

Answer 14

Positive ions surrounded by sea of electrons

Metallic bonds

Question 15

Simple molecukar structure

Answer 15

Iodine
Strong covalent bonds between atoms
Weak intermolecular forces of attraction between molecules

Question 16

Diamond and graphite

Answer 16

Giant covalent structures

Differences in their structure

Question 17

Silicon dioxide

Answer 17

Giantcovalent structure
1 silicon atom covalently bonded to 4 oxygen atoms
Tetrahedron