Question

Which characteristic is given by the principal quantum number? orbital size orbital mass orbital shape orbital orientation

Answer 1

Orbital size can be determined by the principal quantum number.

Higher the principal quantum number, larger be the size of an atom such as, the orbital size of atom with  4s configuration is larger than atom with configuration 2s. In 4s configuration, principal quantum number is 4 while in 2s configuration, principal quantum number is 2 and thus 4 is greater than 2 and therefore, atom 4 s configuration having larger orbital size with more number of shell.

Thus, principal quantum number helps in determining Orbital size

Answer 2

Answer: The principle quantum number gives the orbital size.

Explanation: Principle quantum number tells us about the energy of the orbital. It increases whenever new valence shell is added to the element. It is represented by "n". (n=1, 2, 3, 4 ...)

Whenever there is an increment in the valence shell, the elemental size increases.

Therefore, principle quantum number give the orbital size of the element.