Write the formula of calcium phosphate . Also name the elements presents in them.

Explanation

Both exhibit oxidation state of `+3` Predominatly.
• In both the series, f-orbitals are being progressively filled.
• Actinoids and lanthanoids having same number of unpaired electrons have quite similar spectra. In the adsorption spectra of elements of both the series, sharp line like bands appear due f- f transitions.
• Both are electropositive and high reactivity.
• Like Lantlianoid contraction, there is actinoid contraction. These contractions are due to poor shielding of 5 f and 4 f electrons in actinoids and lathanoids respectively.
• Actinoids like lanthanoids show ion exchange behaviour.