Periodic Table first 20 elements

'Li' is the symbol of:

There are ________ elements in the periodic table

The symbol of Oxygen is:

• O

• Oxy

• Ox

• o

The 20th element of the periodic table is:

• Hydrogen

• Calcium

• Lithium

• Potassium

K is the symbol of:

'H' is the symbol of:

• Hydrogen

• Helium

• Fluorine

• Potassium

______ refers to the number of atoms in one molecule of the element

Argon is represented by:

• arg

• Ar

• A

• Arg

The 15th element is _______

Sodium is represented by:

• Na

• S

• s

• na