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If the atomic weight of an element is 23 times that of the lightest element and it has 11 protons, then it contains : (1)11 protons, 23 neutrons, 11 electrons (2)11 protons,
Choose the best definition of temperature
when n why rearrangement reaction occur?//
Q. What is basic need of SI Units? Ans: The Importance of Units Units give numbers a particular meaning. Example: I am 5 feet 10 inches tall. Feet and inches are units. I co
Elements of Group 13 are namely, boron, aluminium, gallium, indium and, thallium. While studying the alkali and alkaline earth metals, you have seen that all the elements of these
what mass of oxygen gas exerts a pressure of 475 mm Hg in a volume of 1.25L at a temperature of -22C
why water molecule forms covalent bond even though it dissociates into ions
Free radical replacement reactions Free radical substitution reactions include the attack by a free radical. These reactions happen by free radical mechanism that includes Init
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The number of unpaired electrons in nitrogen is: (1) 1 (2) 3 (3) 2 (4) None of these Ans: 3
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