Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from =3 to =1.

Explanation:

= Rydberg constant =

= Initial shell = 3

= Final shell = 1

We have the relation

The energy of the photon emitted here is .

i'm assuming that the correct answer is indeed the first one/ "a"..

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).