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theroy & oranic compound ans
4Be9+2He4-6C12+0n1
Introduction Cluster and ring compounds arise in many areas of chemistry. Rings are most often built by nonmetallic elements with directional covalent bonding. They ad
why is it useful to use moles to measure chemical quantities
what is formox what does it do and is it good or bad for environment
sodium does not react with a) Carbon b) Nitrogen c) Hydrogen d)both a an b
The quantum number which may be designated by s, p, d, and f instead of number is: (1) n (2) l (3) m 1
The number of electrons involved in the bond formation of N 2 molecule : (1) 2 (2) 4 (3) 6 (4) 10 Ans: 6
The atomic number of an element is 35 and mass number is 81. The number of electrons in the outer most shell is: (1) 7 (2) 6 (3) 5 (4) 3 Ans: 7
what is equivalent weight of formaldehyde(HCHO)
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