Elements of Group 1 and 2
Chapter 8: Elements of Group 1 and 2
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See all →- Find out the s block elements compounds importance/uses. Important compounds of s-block elements and their uses CompoundUses Sodium chloride, NaCl (common salt)Food seasoning and preservation; raw... 1
- 5. Choose the correct option. A. The unstable isotope of hydrogen is ..... a. H-1 b. H-2 c. H-3 d. H-4 1) The unstable isotope of hydrogen is ….. a. H-1 b. H-2 c. H-3 d. H-4 Answer: c. H-3 2)Identify the odd one. a. Rb b. Ra c. Sr d. Be Answer... 1
- Name the following A. Alkali metal with smallest atom. 1)Alkali metal with smallest atom. Answer: Lithium (Li) 2) The most abundant element in the universe. Answer: Hydrogen (H) 3)Radioactive alk... 1
- Name the isotopes of hydrogen. Write their atomic composition schematically and explain which of these is radioactive ? Hydrogen has three isotopes i.e., hydrogen ( ₁¹ H) , deuterium ( ₁² H) and tritium ( ₁³ H) with mass numbers 1, 2 and 3 respectively. They a... 1
- A water sample, which did not give lather with soap, was found to contain Ca(HCO3 )2 and Mg(HCO3 )2 . Answer: Washing soda ( Na₂CO₃ ) or slaked lime ( Ca(OH)₂ , Clark's method) will make this water give lather. Water containing Ca(HCO₃)₂ and... 1
- Describe the industrial production of dihydrogen from steam. Also write the chemical reaction involved. Answer: Dihydrogen is made industrially by passing steam over hydrocarbons or red-hot coke at high temperature, followed by the water-gas sh... 1