Question

Hydrogen is the most abundant element on earth after oxygen.
If this is true enter 1 if false enter 0.

Answer 1

Hint: We should know that the abundance of the chemical elements is a measure of the occurrence of the chemical elements relative to all other elements in a given environment. Here you just need to compare hydrogen with oxygen.

Complete step by step 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%.
The most abundant element in the earth’s crust is oxygen (47%).
Hydrogen is only 0.14%(percent by mass) in the earth’s crust. It is the 10th most abundant element on the earth.

Therefore, we can conclude that the correct answer to this question is 0 because it is a false statement.

Note: Hydrogen is the most abundant element in the Universe; helium is second. Hydrogen and helium are estimated to make up roughly 74% and 24% of all baryonic matter in the universe respectively.
The order of the most abundant elements on a mass basis in the Solar System is as follows
Hydrogen (70.57%), Helium (27.52%), Oxygen (0.9592%), Carbon (0.3032%), Nitrogen (0.1105%) and Neon (0.1548%). All the rest of the elements combined make up 0.3879%