What is the correct order of the abundance of non-metal in the earth’s crust 1. Oxygen > Silicon > Sodium > Iron 2. Oxygen > Silicon > Phosphorous > Sulphur 3. Sulphur > Phosphorous > Silicon > Oxygen 4. Iron > Aluminium > Silver > Gold
Answers
Explanation:
The correct sequence is 3. Sulphur > Phosphorus > Silicon > Oxygen.
Answer:
The abundance of non-metal in the earth’s crust:-
Correct order:- Oxygen (O)>Silicon (Si) > Phosphorous (P) >Sulphur (S)
Therefore, the option (2) is correct.
Explanation:
Elements vary in abundance. Oxygen is nearly half and silicon is one quarter of the total mass of the earth's crust. Most of the metals occur in native state and in the combined state. Metals have tendency to react with moisture, oxygen, sulphur and halogen etc. Therefore they occur in the form of oxides, nitrates, sulphides, and phosphates etc.
The list of abundance of some elements given below:
Element Percentage by wt.
Oxygen (O) 46.6
Silicon (Si) 27.7
Aluminium (Al) 8.3
Iron (Fe) 4.7
Sodium (Na) 2.6
Phosphorous (P) 0.1
Sulphur(S) 0.06
Silver (Ag) 7×10⁻⁶
Gold (Au) <5×10⁻⁶
Therefore, the order of abundance Oxygen > Silicon > Phosphorous > Sulphur is correct.
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