3+
Key:
4N
=proton
=electron
=neutron
N
What element is this

1.from liquid state to gaseous state is evaporation 3.solid to liquid is melting 5. solid to gaseous state is sublimation 6. gas to solid state is decomposition 7. a change of state is known as the states of matters

Cr(oh)3 -> cr(3+) + 3oh-