Atoms and Periodic Table Assessment

Where are the most reactive non-metals located on the periodic table?

• The group at the far left side of the table, Alkali metals.

• The rows at the bottom of the table, Lanthanide and Actinide series.

• The second group from the far right side of the table, Halogens.

• The uppermost complete period of the table.

An atom has an atomic number of 11 and a mass number of 23. How many protons are present in this atom?

• 34

• 11

• 12

• 23

Tags

NGSS.MS-PS1-1

A column of elements is given this name.

• A row

• A period

• A group or Family

If the mass number is 32 and the atomic number is 15, how many electrons are present in a neutral atom?

• 15

• 17

• 32

• 47

If the mass number is 24 and the atomic number is 13, how many neutrons are present in the atom?

• 13

• 11

• 24

• 37

Tags

NGSS.MS-PS1-1

Based on the Periodic Table, which symbol represents an element that has 26 protons?

• Ca

• Fe

• Ar

• He

Which of the following is a property shared by the elements in column 14 of the Periodic Table, the Carbon family?

• An atomic number of 6

• An atomic number of 12

• The same electron configuration

• The same number of valence electrons

Which element is found in group 2 and period 5 of the Periodic Table?

• Barium

• Strontium

• Vanadium

• Phosphorus

Based on the Periodic Table, how many protons and electrons are in a neutral atom of Argon (Ar)?

• 18 protons and 18 electrons

• 18 protons and 40 electrons

• 40 protons and 40 electrons

• 40 protons and 18 electrons

Tags

NGSS.MS-PS1-1

Which of the following groups of elements do not usually react with other elements?

• Carbon group

• Halogen group

• Alkali metal group

• Noble gases group