HYDROGEN, First element , HELIUM, Second element from the periodic table , Lithium, Li , Beryllium, Be, Iron, Fe, Carbon, atomic number is 6, Potassium, , Oxygen, , Calcium, Ca.

Ilg'orlar ro'yxati

Vizual uslub

Moslamalar

Namunani almashtirish

)
Tahrirlashni davom ettirish: ?