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ক্যালসিয়াম অক্সালেট ইউরোলিথিয়াসিস, ইউরিক অ্যাসিড পাথর, সিস্টাইন রেনাল ক্যালকুলি চিকিৎসায় নির্দেশিত হয়।
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Give reasons (a) Platinum, gold and silver are used to make jewellery. (b) Sodium, potassium and lithium are stored under oil.
(a) Platinum, gold, and silver are used to make jewellery because they are very lustrous. Also, they are very less reactive and do not corrode easily. (b) Sodium, potassium, and lithium...
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(a) Lithium, sodium, potassium are all metals that react with water to liberate hydrogen gas. Is there any similarity in the atoms of these elements?
(a) Yes. The atoms of all the three elements lithium, sodium, and potassium have one electron in their outermost shells. (b) Both helium (He) and neon (Ne) have filled outermost shells....
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The formation of sodium chloride from gaseous sodium and gaseous chloride is a redox process. Justify.
Na atom get oxidize and Cl is reduced
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Explain why Sodium is less reactive than Potassium?
Due to less metallic character of sodium
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Explain why is sodium less reactive than potassium?
Thus, in potassium, the outermost electron is better shielded from the attractive force of the nucleus. It follows, therefore, that this outermost electron is more easily lost than it is in sodium, so potassium can be...
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The hydroxides and carbonates of sodium and potassium are easily soluble in water
The solubility of a salt in water depends upon their (i) lattice energy and hydration energy. In the case of hydroxide and carbonates of sodium and potassium their hydration energy is...
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Explain the significance of sodium, potassium, magnesium and calcium in biological fluids.
Solution: Significance of sodium and potassium in biological fluids: K+ and Na+ cations are present in the red blood cells. The ratio of K+ to Na+ ions in mammals such as human beings, rabbits, rats and horses is 7:1.
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Bone matrix is rich in (a) fluoride and calcium (b) calcium and phosphorus (c) calcium and potassium (d) phosphorus and potassium
(b) calcium and phosphorus
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Write down the formula of (i) sodium oxide (ii) aluminium chloride (iii) sodium suphide (iv) magnesium hydroxide
(i) Sodium oxide → Na2O (ii) Aluminium chloride → AlCl3 (iii) Sodium suphide → Na2S (iv) Magnesium hydroxide → Mg(OH)2
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Potassium chlorate (KCIO3) on heating forms potassium chloride and oxygen. Write a balanced equation for this reaction.
2KCIO3 (s) ------>2KCl(s ) + 3O2(g)
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