Atomic Structure Quiz

Where are protons and neutrons located in an atom?

• In the nucleus

• In the electron cloud

• In the outermost energy level

• In the orbitals

What is the charge of electrons?

• Positive

• Neutral

• Negative

• Undefined

What determines the reactivity of an atom?

• Atomic mass

• Atomic number

• Valence electrons

• Number of energy levels

How many periods are there on the periodic table?

• 4

• 6

• 7

• 8

Red = protons, white = neutrons, blue = electrons. What element is this?

• Boron

• Lithium

• Carbon

• Beryllium

Select the element that has atomic number 2.

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How many valence electrons are in the atom pictured?

• 4

• 2

• 8

• 0

The number "18" in the periodic table square shows:

• atomic mass.

• atomic number.

• elemental name.

• elemental symbol.

Which of these is in group 2?

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What particle decides the identity of an atom/element?

• proton
• neutron
• electron
• All of the above.