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Rule I
When addition or subtraction is to be carried out in the numbers having different precisions, the final result should be reported up-to the same number of decimal places as are present in the term having the least number of decimal places. Addition of numbers In the addition of 42.2 ..
Sequence Rules
Rule 1 - When four different atoms are attached to the chiral carbon, priority depends on atomic number. The atom with the highest atomic number gets top priority. If the two atoms are isotopes of the same element, the atom of higher mass number has higher priorit..
Sequence Rules
When four different atoms are attached to the chiral carbon, priority depends on atomic number. The atom with the highest atomic number gets top priority. If the two atoms are isotopes of the same element, the atom of higher mass number has higher priorit..
Hund's Rule of Maximum Multiplicity
According to this rule, electron pairing will not take place in orbitals of same energy (same sub-shell) until each orbital is first singly filled with parallel spin. In other words in a set of orbitals having same energy (degenerate orbitals), the electrons distribute themselves to occup..
According to this rule, electron pairing will not take place in orbitals of same energy (same sub-shell) until each orbital is first singly filled with parallel spin. In other words in a set of orbitals having same energy (degenerate orbitals), the electrons distribute themselves to occup..Hund's rule of maximum multiplicity
It states that when more than one orbital of equal energies are available then the electrons will first occupy these orbitals separately with parallel spins. The pairing of electrons will start only after all the orbitals of a given sub level are singly occupied. This is because electrons with par..
It states that when more than one orbital of equal energies are available then the electrons will first occupy these orbitals separately with parallel spins. The pairing of electrons will start only after all the orbitals of a given sub level are singly occupied. This is because electrons with par..Lowest number rule
.e., sum of the locants) is the lowest. This is called the lowest sum rule. For example, the numbering of chain as done in I is correct because the sum of the locants in this chain is lower than that in II. Sum of the locants = 2 + 4 + 9 = 15 Sum of the locants = 2 + 7+ 9 = 18 Sum of the ..
.e., sum of the locants) is the lowest. This is called the lowest sum rule. For example, the numbering of chain as done in I is correct because the sum of the locants in this chain is lower than that in II. Sum of the locants = 2 + 4 + 9 = 15 Sum of the locants = 2 + 7+ 9 = 18 Sum of the ..Rules for Determining the Number of Significant Figures
>The decimal point does not count towards the number of significant figures. For example, the number 345601 has six significant figures but can be written in different ways, as 345.601 or 0.345601 or 3.45601 all having same number of significant figure..
Rules for Writing Equilibrium Constant Expressions
>The concentration term of the solvent, which is present in large excess is not included in the equilibrium constant expression. For example, for the reaction, The equilibrium constant may be written as: By convention we write [H 2 O] = constant so that, The [H 2 O] term is merged with the equilibr..
>The concentration term of the solvent, which is present in large excess is not included in the equilibrium constant expression. For example, for the reaction, The equilibrium constant may be written as: By convention we write [H 2 O] = constant so that, The [H 2 O] term is merged with the equilibr..The sum of two numbers is 14 while their difference is 32. Find the n..
The sum of two numbers is 14 while their difference is 32. Find the numbers using Cramer's rule. => 25 and - 11 or 24 and - 10 or 26 and - 12 or 23 and - 9..
Larger number of side-chains rule
If two different chains of equal lengths (equal number of C atoms) are possible, then select the chain which has larger number of side-chains i.e., select the more-branched chain. For example, in the following molecule, there could be two continuous chains of eight carbon each. The corre..
If two different chains of equal lengths (equal number of C atoms) are possible, then select the chain which has larger number of side-chains i.e., select the more-branched chain. For example, in the following molecule, there could be two continuous chains of eight carbon each. The corre..See what our Users say :
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