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Atomic structure quiz
Five questions on Atomic structure. Answer all 5 to see your score. Questions are drawn from a bank of 15, so every attempt is different.
Question 1 of 5
The atomic number of an element equals its number of:
Question 2 of 5
Sodium-23 (Z = 11) has how many neutrons?
Question 3 of 5
A Mg^(2+) ion (Z = 12) has how many electrons?
Question 4 of 5
Isotopes of an element differ in:
Question 5 of 5
An element has isotopes of mass 10 (20%) and 11 (80%). Its average atomic mass is: