Question

What is the most common element (by mass) forming the planet Earth?​

Answer 1

Answer:

SILICA IS THE MOST COMMO. ELEMENT

Answer 2

Answer:

The mass-abundance of the nine most abundant elements in the Earth's crust is approximately: oxygen 46%, silicon 28%, aluminum 8.3%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium 2.0%, and titanium 0.61%. Other elements occur at less than 0.15%.

I HOPE IT'S HELPFUL....

"kritika".....