Question

Q.1. how many number of element present in atmosphere or Earth crust ?​

Answer 1

Answer:

Oxygen and Silicon

Mark As Brainliest Pls

Answer 2

Answer:

Of these 118 elements, 94 occur naturally on Earth.

Explanation:

Of these 118 elements, 94 occur naturally on Earth. Six of these occur in extreme trace quantities: technetium, atomic number 43; promethium, number 61; astatine, number 85; francium, number 87; neptunium, number 93; and plutonium, number 94.