23rd Sepetmber Chemistry Quiz on Atomic Structure

Which subatomic particle has a negative charge?

• Proton

• Neutron

• Electron

• Nucleus

What is the mass number of an atom with 8 protons, 8 neutrons, and 8 electrons?

• 8

• 16

• 24

• 32

Which of the following represents the electronic configuration of magnesium (Mg, atomic number 12)?

• 2, 8

• 2, 8, 1

• 2, 8, 2

• 2, 7, 3

Which of the following elements is in Group 7 of the periodic table?

• Fluorine

• Argon

• Sodium

• Magnesium

What is the trend in reactivity as you go down Group 1 of the periodic table?

• Reactivity decreases

• Reactivity increases

• Reactivity stays the same

• Reactivity fluctuates

Which of the following elements is a noble gas?

• Sodium

• Chlorine

• Hydrogen

• Argon

The relative atomic mass of chlorine is 35.5. What does this tell you about chlorine atoms?

• All chlorine atoms have a mass number of 35.5

• All chlorine atoms have the same number of neutrons

• Chlorine has more than one isotope

• Chlorine is a noble gas

Which scientist is credited with discovering the nucleus of the atom?

• J.J. Thomson

• Niels Bohr

• Ernest Rutherford

• John Dalton

Which of the following correctly describes a period in the periodic table?

• A column of elements

• A row of elements

• A diagonal line of elements

• A group of metals

How many electrons are in the outer shell of a sulfur (S) atom?

• 2

• 4

• 6

• 8