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The flame colours of metals ions are due to
Options
(a) Frenkel deffect
(b) Schottky defect
(c) Metal deficiency defect
(d) Metal excess defect
Correct Answer:
Metal excess defect
Explanation:
The flame colours of metal ions are due to metal excess defect. These type of crystals are generally coloured.This is due to the presence of free electrons. These electrons get excited easily to higher energy levels by absorption of certain wave lengths from the visible light and therefore, the compounds appear coloured.
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- In the gas phase reaction C₂H₂ + H₂ ⇌ C₂H₆, the equilibrium constant
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Topics: Solid State and Solutions
(91)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The compound which does not exist as hydrate form
- The π-bond organo metallic compound which has ethene as one of its component is
- In the gas phase reaction C₂H₂ + H₂ ⇌ C₂H₆, the equilibrium constant
- In Dumas’ method of estimation of nitrogen 0.35g of an organic compound gave 55mL
- Diazo-coupling is useful to prepare some
Topics: Solid State and Solutions (91)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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