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प्रश्न
Name a greenish-yellow gas which also bleaches.
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उत्तर
Chlorine gas (Cl2)
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संबंधित प्रश्न
An element E exists in three allotropic forms A, B and C. In allotrope A, the atoms of element E are joined to form spherical molecules. In allotrope B, each atom of element E is surrounded by three other E atoms to form a sheet like structure. In allotrope C, each atom of element E is surrounded by four other E atoms to form a rigid structure.
(a) Name the element E.
(b) What is allotrope A.
(c) What is allotrope B?
(d) What is allotrope C?
(e) Which allotrope is used in making jewellery?
(f) Which allotrope is used in making anode of a dry cell?
Give the characteristic properties of covalent compounds.
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Methane
The electronic configuration of N2 is 2, 5. How many electrons in the outer shell of a N atom are not involved in the formation of a nitrogen molecule?
Elements Q and S react together to form an ionic compound. Under normal conditions, which physical state will the compound QS exist in?
Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g., hydrogen. After the formation of four bonds, carbon attains the electronic configuration of ______.
Two carbon atoms can always form one or two covalent bonds.
Which of the following compound(s) possesses a high melting point?
What is a covalent bond?
