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How can we determine the molecular and electron geometry of H2O?

The molecular geometry deals with the position of the nucleus of the different atoms in the molecule whereas the electron geometry deals with the position of the orbitals. Electron geometry is specific for e...
ER
Answered by Eva R. • Chemistry tutor
8174 Views

What is the difference between an endothermic and exothermic reaction?

(Using a diagram of energy changes) The simplest way of thinking about it is that exothermic reactions release energy, such as heat, to the surroundings whereas endothermic reactions absorb energy from the s...
CC
12462 Views

Why is SiO2 a solid whereas CO2 is a gas at room temeperature?

The main factor influencing a given compound's state is the strength of intermolecular forces - those need to be larger than the thermal energy for a compound to be solid/liquid. For CO2 the only type of int...
WG
7896 Views

Explain the bonding in benzene, and hence its greater stability

Benzene consists of six carbon atoms in a hexagonal ring, all of which are sp^2 hybridised. This allows the perpendicularly oriented 'p' orbital of each carbon to overlap laterally all around the ring. The d...
EP
Answered by Ethan P. • Chemistry tutor
3248 Views

Why do first ionisation energies decrease down a group?

Ionisation energy is defined as the energy required to remove an electron from a gaseous atom or ion. As we descend down a periodic group we must think about how the atomic radius . As we descend the group t...
JT
4653 Views