Which of the following element is not present abundantly in earth's crust:
Correct answer: C. Na
- A. Si
- B. Al
- C. Na
- D. O
Explanation
Sodium is not present abundantly in the earth's crustThe Earth's crust is a thin outer layer that makes up less than 1% of the planet's total volume. It is the top half of the lithosphere, which is made up of the crust and the upper part of the mantle and is a division of the layers of the Earth.95% of the rocks that make up the Earth's crust are igneous and metamorphic, while 4% are shale, 0.75% are sandstone, and 0.25% are limestone. 88.1% of the mass of the Earth's crust is made up of the elements oxygen, silicon, aluminum, and iron, and the remaining 11.9 percent is made up of another 90 elements.47% of the Earth's crust is oxygen, 28% is silicon, and 8.1% is aluminum. Only 2.8% of the Earth's crust is sodium
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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