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What is the most abundant element in the...

What is the most abundant element in the universe?

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**Step-by-Step Solution:** 1. **Understanding Abundance**: The term "abundant" refers to the presence of an element in large quantities compared to others. 2. **Identifying Elements**: In the universe, various elements exist, but we need to determine which one is the most prevalent. 3. **Researching Elemental Composition**: Through scientific studies and observations, it has been established that hydrogen is the most common element in the universe. ...
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ICSE-HYDROGEN-VERY SHORT ANSWER TYPE QUESTIONS
  1. What is the most abundant element in the universe?

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  2. Name the isotopes of hydrogen.

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  3. What is common in the electronic configuration of H and alkali metals?

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  4. In what respect electronic configuration of hydrogen and halogens are ...

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  5. Can hydrogen exist in -1 oxidation state?

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  6. To what extent does hydrogen exist in the earth's crust ?

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  7. Which isotope of hydrogen is radioactive in nature?

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  8. What happens when steam is passed over red hot iron ?

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  9. Name the gas produced on treating calcium hydride with water.

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  10. What type of zinc is used for the laboratory preparation of dihydrogen...

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  11. Which process of manufacture of dihydrogen makes use of red hot coke a...

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  12. Why is dihydrogen not much reactive at ordinary temperatures ?

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  13. Write the hydrides of Sodium and Magnesium.

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  14. What type of elements do form saline hydrides ?

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  15. Do Be and Mg form saline hydrides ?

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  16. Among the alkali metal hydrides, which hydride is most stable ?

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  17. What type of lattices are formed by alkali metal and alkaline earth me...

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  18. Name the groups whose elements prefer to form molecular hydrides.

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  19. What type of hydrides are formed by transition elements ?

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  20. What type of hydrides do not possess definite composition

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