Atomic Number of Aluminium

Mass Number of Sulphur if the atomic number is 16

Symbol of
Argon
Potassium
Aluminium
Lithium
Oxygen
Calcium

Number of Neutrons in Magnesium if the mass number is 24 and the atomic number is 12

Number of electrons in Chlorine

What is the maximum number of electrons the fourth shell of an atom can hold?

The symbol and electronic configuration of
Carbon
Neon
Sodium
Nitrogen
Magnesium
Sulphur

Symbol of Beryllium

Mass Number of Boron if the neutron number is 6?

Are there the same number of electrons as the number of protons in an atom?

What is the mass of an electron?

What kind of charge does a Neutron have?

No. of protons = No. of Neutrons =

Draw the atomic structure of Chlorine