Atomic structure, isotopes and electron configuration

Question 1 of 10

Isotopes of an element have the same chemical properties because they have

Question 2 of 10

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

Question 3 of 10

Write the s, p notation for calcium (Z = 20): ___

Question 4 of 10

Naturally occurring chlorine consists of 80% of chlorine-35 and 20% of chlorine-37. (a) Define the term isotopy. (b) Calculate the relative atomic mass of chlorine. (c) Explain why both isotopes react in the same way.

Question 5 of 10

The electron configuration of potassium ends in 4s¹.

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

Write the s, p notation for chlorine (Z = 17): ___

Question 8 of 10

Isotopes are atoms of the same element with

Question 9 of 10

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

Question 10 of 10

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