Answer:
Because frequency and wavelength are related by a constant (c) the energy can also be written in terms of wavelength: E = h · c / λ.
Answer is B, because CaSO3 only has one S
Answer:
The s-block of the periodic table has 1 orbital
we know that each orbital consists of 2 electrons
and since the periodic table arranges the elements on the basis of their atomic number,
the s-block spans 2 groups.
This is also the reason why the p-block spans 6 groups, d-block spans 10 groups and f-block spans 14 groups