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Install NowAnuj A
Mar 1, 2015
Difference between mendeleevs periodic table & mordern periodic table
Ayushman
Feb 26, 2014
write the similarities between dobereiner's triads and newland's law of octaves?
write the change in modern periodic table as we go from left to right and top to bottom in context to -
(1)valency electrons
(2)valency
(3)electronegativity
(4)metallic character
(5)electron affinity
(6)atomic size
also explain how?
write the change in modern periodic table as we go from left to right and top to bottom in context to -
(1)valency electrons
(2)valency
(3)electronegativity
(4)metallic character
(5)electron affinity
(6)atomic size
also explain how?
�i) � Atomic weights of elements were determined with the help of periodic table
Atomic weight = Valency ´ Equivalent weight = Group number ´ Equivalent weight.
...
Dilip Kumar
Dec 11, 2014
Electronic configuration of lanthanoids and actinoids
Electronic configuration of lanthanoids and actinoids
Ketan Ahuja
Dec 29, 2014
What are Dobereiner’s triads?
In year 1817 a german scientist dobereiner suggested that properties of element are related to their atomic masses female groups of 3 elements each having similar chemical properties and call them triod
Gautam
Dec 27, 2014
What are the disadvantages of modren periodic table?
The disadvantages of modern periodic table are
Rohit Jha
Jan 24, 2014
What are the limitations of modern periodic table
The limitations of modern periodic table are :- i) It could not provide a proper plzcement of hydrogen.... ii) no place to isotopes of various elements is given.... Hope...
Premwati Sharma
Feb 12, 2015
why could no fixed position be given to hydrogen in Mandeleev's periodic table?
Deepam
Feb 28, 2014
why are the elements of group 17 are known as halogens???
Rohit Jha
Feb 13, 2014
Name the compound responsible for depletion of ozone?(other than CFC)
P Murali Krishna
May 1, 2015
The first ionization potential of Na, Mg, Al, Si are in the order of : ( give justification)
1) Na < Mg > Al < Si
2) Na > Mg > Al > Si
3)Na < Mg < Al > Si
4) Na > Mg > Al < Si. Justify
1) Na < Mg > Al < Si
2) Na > Mg > Al > Si
3)Na < Mg < Al > Si
4) Na > Mg > Al < Si. Justify
Anuj A
Mar 1, 2015
Difference between mendeleevs periodic table & mordern periodic table
Ayushman
Feb 26, 2014
write the similarities between dobereiner's triads and newland's law of octaves?
write the change in modern periodic table as we go from left to right and top to bottom in context to -
(1)valency electrons
(2)valency
(3)electronegativity
(4)metallic character
(5)electron affinity
(6)atomic size
also explain how?
write the change in modern periodic table as we go from left to right and top to bottom in context to -
(1)valency electrons
(2)valency
(3)electronegativity
(4)metallic character
(5)electron affinity
(6)atomic size
also explain how?
�i) � Atomic weights of elements were determined with the help of periodic table
Atomic weight = Valency ´ Equivalent weight = Group number ´ Equivalent weight.
...
Dilip Kumar
Dec 11, 2014
Electronic configuration of lanthanoids and actinoids
Electronic configuration of lanthanoids and actinoids
Ketan Ahuja
Dec 29, 2014
What are Dobereiner’s triads?
In year 1817 a german scientist dobereiner suggested that properties of element are related to their atomic masses female groups of 3 elements each having similar chemical properties and call them triod
Gautam
Dec 27, 2014
What are the disadvantages of modren periodic table?
The disadvantages of modern periodic table are
Rohit Jha
Jan 24, 2014
What are the limitations of modern periodic table
The limitations of modern periodic table are :- i) It could not provide a proper plzcement of hydrogen.... ii) no place to isotopes of various elements is given.... Hope...
Premwati Sharma
Feb 12, 2015
why could no fixed position be given to hydrogen in Mandeleev's periodic table?
Deepam
Feb 28, 2014
why are the elements of group 17 are known as halogens???
Rohit Jha
Feb 13, 2014
Name the compound responsible for depletion of ozone?(other than CFC)
P Murali Krishna
May 1, 2015
The first ionization potential of Na, Mg, Al, Si are in the order of : ( give justification)
1) Na < Mg > Al < Si
2) Na > Mg > Al > Si
3)Na < Mg < Al > Si
4) Na > Mg > Al < Si. Justify
1) Na < Mg > Al < Si
2) Na > Mg > Al > Si
3)Na < Mg < Al > Si
4) Na > Mg > Al < Si. Justify