Exam Q 25

Question 1

Define energy level

Answer 1

an energy level is defined as the fixed energy value that an electron in an atom may have

Question 2

Write the electron configuration for sulfur in its ground state, showing the arrangement in atomic orbitals of the highest energy electrons

Answer 2

1s^2, 2s^2, 2p^6, 3s^2, 3p^4

show: 3 boxes with one up arrow in each and one arrow down in the first box to represent 3px^2, 3py^1, 3pz^1/ sp^4

Question 3

how many (i) energy levels and (ii) orbitals are occupied in a sulfur atom in its ground state

Answer 3

(i) energy levels: 3
(ii) orbitals: 9 as one orbital has 2 electrons, applying this we get 7 full orbitals and are left with two orbitals 3py^1 and 3pz^1 which are 2 orbitals which are not full so add these 2 onto the 7 and we get 9