question 4)
plz give the answer of all parts plz
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1)In the modern periodic table, the elements are arranged in order of increasing atomic number. (In Mendeleev’s table, they were arranged in order of increasing atomic weight).
2)More elements are in the modern periodic table which have been discovered since Mendeleev’s time. eg. the noble gases (group 0).
3)There are no gaps. The gaps in Mendeleev’s have been filled by the elements that were discovered.
4)The transition elements are listed in a separate block where as Mendeleev included them with the other elements.
2)More elements are in the modern periodic table which have been discovered since Mendeleev’s time. eg. the noble gases (group 0).
3)There are no gaps. The gaps in Mendeleev’s have been filled by the elements that were discovered.
4)The transition elements are listed in a separate block where as Mendeleev included them with the other elements.
karanpanwar:
A. a) group 17 and period 3
A) b Halogens
A. c) Non metal
okh thanx bro
B part
bro atha hai
B) Oxidation in the reaction is of:-
S going from oxidation number -2 to 0
Reduction in the reaction is of:-
Cl going from oxidation number 0 to -1
As Cl goes from oxidation number 0 to -1 which is a reduction reaction, so Cl2 is the oxidizing agent
S going from oxidation number -2 to 0
Reduction in the reaction is of:-
Cl going from oxidation number 0 to -1
As Cl goes from oxidation number 0 to -1 which is a reduction reaction, so Cl2 is the oxidizing agent
thankx a lot bro
last c part
plz
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A_Group_17
Period_3
B=halogen atom
C=nonmetal
2. Suiphur is reduced and H2S is oxidising agent
Period_3
B=halogen atom
C=nonmetal
2. Suiphur is reduced and H2S is oxidising agent
bhai kona part hai
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