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The atomic number of an element is always equal to: (1)Atomic weight divided by 2 (2)Number of neutrons in the nucleus (3)Weight of the nucleus (4)Electrical ch
what is allotropy
Q. Define Elements and Compounds? Pure substances are categorized into two categories that are elements and compounds. An element is a substance that can't be separated into
what is the diagonol relationship of lithium and magnesium
How ion works?
what are the signs associated with electron affinity?
Q. Show the Multiple covalent bonds between electron pairs? Ans. Two atoms may share one electron pair, two electron pairs or three electron pairs. The bonds formed in th
Which of the following is isoelectronic with carbon atom: (1) Na + (2) Al +3 (3) O 2- (4)N + Ans: N +
Silver has a density of 10.5gcm -3 . The no. of silver atoms on a surface area of 10-12m 2 can be expressed in scientific notation aas y x 10x.The value of x is ..? Ans) d = m
WRITE HALF-REACTION FOR THE REDOX Fe2+ + MnO4- =Fe3+ + Mn2+
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