Answer:
solid at room temperature
Explanation:
they are unreactive
I think the answer is letter B
Answer:
The frequency of the photon is .
Explanation:
Given that,
Energy
We need to calculate the energy
Using relation of energy
Where, = energy spacing
Put the value of h into the formula
Hence, The frequency of the photon is .
Answer:
at the melting point and boiling point
Explanation:
the heat abdorbed is used to break down the forces holding the particles together to allow it to change its state