Question is based on the following passage: p-block elements are placed in groups 13 to 18 of the periodic table. Group 15 is nitrogen family. Nitrogen makes various compounds like NH₃, HNO₃, N₂O, NO₂ etc. Phosphorus exists in the form of white and red phosphorus. White phosphorus glows in dark. PH₃ gas is used as smoke screen. Group 16 is called oxygen family. Dry air contains 21% O₂ gas by volume. Combined sulphur exists as sulphates such as gypsum, epsome salt, baryte etc. The allotropic forms of sulphur are Rhombic and monoclinic sulphur. S₂ is paramagnetic like O₂ and it is stable at high temperature. Group 17 is Halogen family. F₂ is highly reactive, Cl₂ is greenish yellow gas. Both SO₂ and Cl₂ are used for bleaching. Group 18 is Noble gas family but some noble gases also form compounds. Complete hydrolysis of XeF₆ gives HF and XeO₃ as main products.
Sulphate of magnesium of the following is:
Epsom salt
- Epsom Salt is the common name for Magnesium Sulphate (MgSO₄). It is widely used in bath salts, fertilizers, and other applications.
- Gypsum is calcium sulfate (CaSO₄), not magnesium sulfate.
- Baryte is barium sulfate (BaSO₄), not magnesium sulfate.
- Galena is lead sulfide (PbS), not a magnesium salt.
- Therefore, the correct answer is (b) Epsom salt.
Important Questions from The d-and f-block Elements
Which of the following compounds will not undergo Azo coupling reaction?
Which of the following is incorrect?
Increasing order of oxidation states of transition metal oxides will be:
(A) TiO₂
(B) MnO-₄
(C) VO₂⁺
(D) CrO₄²⁻
(E) Ni (CO)₄
Choose the correct answer from the options given below:
Indium is mainly refined by:
Which one is the correct electronic configuration of sulphur?
