Periodic Table Introduction

How did Dmitri Mendeleev arrange the elements on his original Periodic Table?

• alphabetical

• density

• melting point

• atomic mass

The horizontal row on the periodic table is called a

• group
• family
• period
• atomic number

Tags

NGSS.HS-PS1-1

A vertical column is called...

• group
• tower
• period
• crew

An atom of an element contains 20 protons, 20 neutrons, and 20 electrons. This element is in Group . . .

• 4

• 18

• 2

• 1

Tags

NGSS.HS-PS1-1

The elements of the Periodic Table are arranged in horizontal rows according to each successive element's greater . . .

• atomic mass

• number of protons

• number of neutrons

• atomic radius

What is the atomic number of an element in Group 2?

• 10

• 13

• 12

• 11

Which element is in Group 2 and Period 7 of the Periodic Table?

• radium

• radon

• magnesium

• manganese

Tags

NGSS.HS-PS1-1

The observed regularities in the properties of elements are periodic functions of their . . .

• kernel electrons

• mass numbers

• oxidation states

• atomic numbers

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

All of the atoms of the elements in Period 2 have the same number of . . .

• valence electrons

• protons

• occupied energy levels (shells)

• neutrons

Tags

NGSS.HS-PS1-1

What is the factor that determines the chemical properties of an element?

• The number of electron shells

• The number of electrons in the innermost shell

• The number of electrons in the outermost shell

• The number of neutrons in the nucleus

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2