5.3 Covalent Bonding Flashcards Preview

OCR Chapter 5 Chemistry (AS) > 5.3 Covalent Bonding > Flashcards

Flashcards in 5.3 Covalent Bonding Deck (13)
Loading flashcards...
1

Define covalent bond

The electrostatic attraction between a shared pair of electrons and the nuclei of the bonded atoms.

2

Define covalent bond in terms of orbital overlap

The overlap of orbitals to give a shared pair of electrons

3

Covalent bond is between:

NON metals sharing electrons to achieve a full outer shell

4

What are lone pairs

Paired electrons that aren't shared

5

How many covalent bonds does carbon form?

4

6

How many covalent bonds does nitrogen form?

3

7

How many covalent bonds does oxygen form?

2

8

How many covalent bonds does hydrogen form?

1

9

What are double covalent bonds?

When The electrostatic attraction is between 2 shared pairs of electrons and the nuclei

10

What are triple covalent bonds?

When the electrostatic attraction is between 3 shared pairs of electrons and the nuclei

11

What is a dative covalent bond?

Also known as?

Example?

A covalent bond in which the shared pair of electrons has been supplied by one of the bonding atoms only.
Also known as co ordinate.

NH4+

12

How to measure covalent bond strength?

Using average bond enthalpy

13

What do covalent bonds form?

Simple and giant structures