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Nuclei contain uncharged neutrons and positively charged protons; these two particles with about the same mass are known as nucleons. The number of protons is the atomic number of an element (Z), and is matched in a neutral atom by the exact number of electrons. The total number of nucleons is the mass number and is specified by a superscript on the symbol of the element. Thus 1H has a nucleus with no neutrons and one proton, 16O has eight protons and eight neutrons, 208Pb has 82 protons and 126 neutrons.
give 2 examples of compounds that are bonded in the following ways (a) Hydrogen bonding (b)Vander waal forces (c) Co-ordinate covalent bonding. Explain with the aid of diagram how
Q. Normal functioning of blood? The sixth position marked by X is either occupied by H 2 0 or 0 2 molecules. Impotant thing to note is that Fe 2+ in hemoglobin does not get o
it is impossibe to synthesise orgnic compounds in the lab since life force is essential for their formation -theory is known as
Q. Concentration factors affecting taste quality? There is a specific range at which the tasteful substances should be used. The concentration required for identification is
Chemical Properties of Maleic Acid and Fumaric Acid Chemically, both of the acids provide the reactions of alkenes and dibasic acids apart from that the maleic acid on heating
Role of organic solvents in atomisation: The organic solvents of low molar mass like alcohols, ethers, and ketones enhance the absorption peaks by increasing rate of aspiratio
what is infiltration
what is point function
Methane - Members of Alkanes It is also termed as marsh gas. (i) Industrial method of preparation: Mathane gas is acquired on a large scale from natural gas by liquefactio
assignment in the topic of corey house reaction
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