Review ON PERIODIC TABLE

Each column of the periodic table is

• an element.
• an isotope.
• a group.
• a period.

Elements within the same group in the periodic table have similar properties because they have the same number of

• protons.
• neutrons.
• ions.
• valence electrons.

Which is not a family of the periodic table?

• alkaline-earth metals
• anions
• halogens
• noble gases

Elements that belong to the same group have the same number of

• valence electrons
• inner electrons
• neutral electrons
• total electrons

What information in the periodic table indicates the number of protons in an atom?

• the position of the element in its column
• the element’s chemical symbol
• the element’s atomic number
• the element’s atomic mass

How many protons does an atom with an atomic number of 23 and a mass number of 51 have?

• 23
• 51
• 28
• 74

Tags

NGSS.MS-PS1-1

An atom of gold with 79 protons, 79 electrons, and 118 neutrons would have a mass number of

• 39
• 197
• 158
• 276

Tags

NGSS.MS-PS1-1

How many halogens are in Period 3 of the Periodic Table?

• 3
• 1
• 4
• 2

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

• Magnesium
• Radon
• Manganese
• Radium

Alkali metals, alkaline earth metals, and halogens are found respectively in Groups

• 1, 2, and 14
• 1, 2, and 18
• 1, 2, and 17
• 2, 13, and 17