Atomic structure, isotopes and electron configuration

Question 1 of 10

Write the s, p notation for potassium (Z = 19): ___

Question 2 of 10

Electrons in the same orbital must have opposite spins.

Question 3 of 10

What is the electron configuration (by shells) of lithium, atomic number 3?

Question 4 of 10

A 3d subshell can hold 10 electrons.

Question 5 of 10

Write the s, p notation for sulphur (Z = 16): ___

Question 6 of 10

Naturally occurring bromine consists of 60% of bromine-79 and 40% of bromine-81. (a) Define the term isotopy. (b) Calculate the relative atomic mass of bromine. (c) Explain why both isotopes react in the same way.

Question 7 of 10

Naturally occurring copper consists of 75% of copper-63 and 25% of copper-65. (a) Define the term isotopy. (b) Calculate the relative atomic mass of copper. (c) Explain why both isotopes react in the same way.

Question 8 of 10

What is the electron configuration (by shells) of boron, atomic number 5?

Question 9 of 10

The 4s subshell is filled before the 3d subshell because

Question 10 of 10

The relative atomic mass of an element is a weighted average of the masses of its isotopes.