Which of the following statements are not true for hydrogen?
a. | It exists as a diatomic molecule. |
b. | It has one electron in the outermost shell |
c. | It can lose an electron to form a cation that can freely exist |
d. | It forms a large number of ionic compounds by losing an electron |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Which of the following statements about hydrogen are correct?
1. | Hydrogen has three isotopes of which protium is the most common |
2. | Hydrogen never acts as a cation in ionic salts |
3. | Hydrogen ion, H+, exists freely in solution |
4. | Dihydrogen does not act as a reducing agent |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Radioactive elements emit , , and rays and are characterized by their half-lives. The radioactive isotope of hydrogen is
1. Protium
2. Deuterium
3. Tritium
4. Hydronium
Given below are two statements:
Assertion (A): | Some metals like platinum and palladium, can be used as storage medium for hydrogen. |
Reason (R): | Platinum and palladium can absorb large volumes of hydrogen. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | (A) is false but (R) is true. |