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Q. Early Theories of Matter?
In ancient Greece philosophers discussed the nature of matter. The philosopher Democritus held that matter was composed of elementary particles called atoms in otherwise empty space. Over two thousand years would pass previous to the existence of the atoms was proven.
what is 1 u equal to ?
Q. Explain Pauli Exclusion Principle? When assigning electron configurations, it is essential to consider the two important principles concerning electrons in orbitals:
what rules and principles are violated in the following electronic configuration: 1s22s3
Why is zinc is not extracted from zinc oxide through reduction with CO? Solution) Reducing agent should have more negative ΔG value. In case of zinc oxide ,Zn has more negativ
what is diagonal relationship?
Physical properties Alkyl Halides (i) CH 3 F,CH 3 Cl, CH 3 Br and C 2 H 5 Cl are gases at room temperature. The alkyl halides up to be colourless liquids whereas higher members
the law of multiple proportion
the decomposition of nh3 on a platinum surface is a zero order reaction. what are the rates of production of n2 and h2 if k+2.5*10-4 mol-1 lsec-1?
Name the chemical components which constitute nucleotides. Write any two functions of nucleotides in a cell.
There are 13 electrons in an element whose nucleus comprise 14 neutrons. Obtain atomic number and atomic weight of this element. If atomic weight of the isotope of above element is
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