Package 3 Flashcards
1
Q
Octet rule exceptions
A
H and He are stable with 2 electrons
Be is stable with 4
B is stable with 6
Elements in period 3 onwards can hold 8, 10, 12 electrons
2
Q
What happens to energy when a covalent bond is formed
A
It is released
3
Q
Why are covalent bonds at a fixed distance
A
The forces of attraction between the nuclei and shared electrons are balanced by the forces of repulsion between the two nuclei
4
Q
Bond strength
A
Amount of energy that must be used to break one mole of a bond in the gaseous state
5
Q
As the pairs of electrons between the atoms increase…
A
The electrostatic attraction increases and the nuclei of the atoms get closer
6
Q
Bond length vs radius of an atom
A
Proportional
