1. What values are needed to determine the energy of an electron in a many‑electron atom?
O n
O
O m
O ms
2. What information is most important in determining the size of an orbital?
O n
O
O m
O ms
3. What information is needed to determine the orientation of an orbital?
O n
O
O m
O ms
4. What information is needed to determine the general shape of an orbital?
O n
O
O m
O ms

1. n

2. n

3.

4. l

Explanation:

Principle Quantum Numbers : It describes the size of the orbital and the energy level. It is represented by n. Where, n = 1,2,3,4....

Azimuthal Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1).For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic Quantum Number : It describes the orientation of the orbitals. It is represented as . The value of this quantum number ranges from -l to +l.

Spin Quantum number : It describes the direction of electron spin. This is represented as s.

nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.  

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.