Bonding Of Atoms

Question 1

What is electronegativity

Answer 1

Electronegativity is the power of an atom to attract the pair of electrons in a covalent bond

Question 2

Why does ionic bonding happen

Answer 2

Strong electrostatic force of attraction between the oppositely charged ions

Question 3

What increases bond strength?

Answer 3

1) difference in charges-greater difference ,greater strength
2) the smaller the ionic radius

Question 4

Metallic bonding

Answer 4

Strong electrostatic force of attraction between positive metal ions and the sea of delocalised electrons

Question 5

Factors affecting metallic bonding

Answer 5

1) the ionic change in the metal
2) the number of delocalised electrons
3) the atomic radius

Question 6

Properties of metals and why

Answer 6

1) metals are good conductors of electricity and heat as the electrons are free to move and flow
2)metals have very high melting and boiling points as they age a strong attractions between the positive ions and delocalised electrons
3) metals are malleable and ductile.this means they can be hammered into shape.this is possible as there are layers of ions that can slide over each other

Question 7

Covalent bonding

Answer 7

A covalent bond is a shared pair of electrons between atoms

Question 8

What is co-ordinate bonding

Answer 8

Co-ordinate bonding is when one atom provides both electrons needed to form a covalent bond

Question 9

Conditions for co-ordinate bonding

Answer 9

1) the atom donations the electrons must have a lone pair of electrons
2)the atoms receiving the electrons must have a vacant orbital
3)we represent the co-ordinate bond with an arrow instead of a lien