Periodic Table

The “cloud” around the nucleus of an atom contains ________________

• Electrons

• Neutrons

• Protons

The nucleus of an atom has a _______ charge

• positive

• negative

• neutral

Which element is most similar to Oxygen?

• Sulfur

• Carbon

• Nitrogen

• Helium

How many valence electrons does lithium have

• 1

• 2

• 3

• 4

An isotope of hydrogen weighs 3 amu. How many neutrons does it have?

• 1

• 2

• 3

• 4

Which of the following elements is the most reactive?

• Mg

• Cl

• Ne

• Cs

Which element has 17 electrons?

• H

• O

• Cl

• Au

What is the symbol for Silver?

• Au

• Ag

• Si

• Ve

What is the atomic number for potassium?

• 4

• 19

• 38

• 39

If an element has an atomic # of 54, that means it has ____ protons

• 30

• 43

• 45

• 54