periodic table basics

What does the number in the top left corner represent?

• protons

• neutrons

What does the number under the symbol represent?

• atomic number

• atomic mass

• electron structure

What number tells us how many electrons would be in a neutral atom?

• mass number

• atomic number

What are the electrons in the outermost energy level called?

• valence electrons

• octet electrons

• energy levels

These shaded elements are

• metals

• nonmetals

• metalloids

These shaded elements are

• metals

• nonmetals

• metalloids

These shaded elements are

• metals

• nonmetals

• metalloids

These shaded elements are

• inner transition elements

• outer transition elements

Who introduced the modern system of element notation?

• John Daulton

• Jons Berzelius

• Robert Boyle

• Antoine Lavoisier

What is the symbol for CALCIUM?

• C
• Cl
• Ca
• Cm