The most abundant element in the earth crust is

The most abundant element in the earth's crust is:

The most abundant element in the earth's crust among the following is

The most abundant element in the earth's crust (by weight) is

Fill in the blanks : (b) The most abundant element in the earth's crust is ...................... .

(A) Atomosphere contain 78% by volume of nitrogen (R ) Oxygen is the most abundant element in the earth crust