Elements and symbols_ Grade 7

Elements arranged in columns are called

• period

• group

• compound

• salt

Elements arranged in rows

• period

• group

• salt

• compound

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Elements in first period are

• C and N

• H and He

• S and Na

• Li and Mg

Symbol of element sodium is

• S

• So

• Na

• N

Alkali metals are present in

• Group 1

• Group15

• group 17

• group-18

Elements- halogens are in --------

• Group 1

• group13

• group 17

• group-18

Unreactive gases are in

• Group-1

• group-17

• group 18

• group 2

Metals are on ________ side of periodic table

• left

• right

• top

• bottom