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The charge on the atom containing 17 protons, 18 neutrons and 18 electrons is:
(1) +1
(2) -2
(3) -1
(4)Zero
Ans: -1
what do you mean by homologous series .
1s 2 , 2s 2 , 2p 6 3s 1 shows configuration of: (1) Al 3+ in ground state (2) Ne in excited state (3) Mg + in excited state (4) None of these Ans: Mg + in
Fission of Covalent bond
Why cyclo propane is more stable than cyclohexane
a small 0.600ml bubble forms at the bottom of a lake where the temperature is 4.0 degrees Celsius and the pressure is 2.40 atm. What volume will the bubble occupy near the surface
what is chemical cobination
Saponification value - Analysis of oils and fats It is quantify of fatty acids denote as esters in oils and fats. It is described as the number of milligrams of KOH needed to s
Q. Explain the structure of Single covalent bonds? Ans. Atoms tend to achieve the stable electron configuration of a noble gas when forming a bond. In covalent bonding thi
4. (a) Explain the concept of (i) intrinsic, (ii) n-type, and (iii) p-type semiconductors with the aid of bond diagrams and band diagrams. (b) What is a hole? Using a mathematic
Postulates of molecular orbital theory?
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