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Class 11 Tuition > Learn Chemistry > Justify the given statement with suitable examples...
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Justify the given statement with suitable examples “the properties of the elements are a periodic function of their atomic numbers”.

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Learn Chemistry +1 Classification of Elements and Periodicity in Properties

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in mosley's long periodic table elements are arranged in periods accoding to increasing order of atomic number.
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in moseley's long periodic table elements are arranged in periods accoding to increasing order of atomic number. the elements present in groups have similar chemical properties.they have same general electronic configuration. elements in I group Li,Na,k have similar properties.
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Yes this is right ,because earlier stage according to mendaleev elements properties of elements function of atomic mass not the atomic number .this is good if we put elements according there atomic mass but it's fail if we consider isotops ex. Hydrogen isotopes have single place with same atomic number...
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Yes this is right ,because earlier stage according to mendaleev elements properties of elements function of atomic mass not the atomic number .this is good if we put elements according there atomic mass but it's fail if we consider isotops ex. Hydrogen isotopes have single place with same atomic number but different atomic mass.so it's fail.then improvement done in periodic table and new theory represent by Neil Bohr according to him properties depends on atomic number not on atomic mass and though atomic number we easily represents electronic configuration of any element and mostly chemical reaction represent on the basis of electronic configuration like valence electron.... read less
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Group number defines valancy of element ex:- IA group elements H, Li, Na, k etc having one electron in last orbit, similarly it defines for other groups. Thus for Hydrogen -1, Li - 2,1, Na-2,8,1 for K -2,8,8,1. number of orbits are increasing but last orbit contains only ne electron in each case. from...
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Group number defines valancy of element ex:- IA group elements H, Li, Na, k etc having one electron in last orbit, similarly it defines for other groups. Thus for Hydrogen -1, Li - 2,1, Na-2,8,1 for K -2,8,8,1. number of orbits are increasing but last orbit contains only ne electron in each case. from electronic configuration in view elements are in perodic function of their atomic number. read less
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Related Questions

The size of isoelectronic species-F–, Ne and Na+ is affected by
(a) nuclear charge (Z)
(b) valence principal quantum number (n)
(c) electron-electron interaction in the outer orbitals
(d) none of the factors because their size is the same
a)nuclear charge (Z)
Suri
0 0
5
Which of the following is the correct order of size of the given species?
(a) I>I>I+
(b) I+>I–>I
(c) i>i+>i–
(d) i– >i>i+
Correct answer is d
Pinaki
0 0
5
Among halogens, the correct order of amount of energy released in electron gain (electron gain enthalpy) is
(a) F > Cl > Br > I
(b) F < Cl < Br < I
(c) F < Cl > Br > I
(d) F < Cl < Br > I
Answer is C as due to interelectronic repusion and small size F has less negative electron gain enthalpy than Cl
Jagabandhu
0 0
7
Dry ice is(a) Solid NH3 (b) Solid S02 (c) solid C02  (d) solid N2
C....solid co2
Mukul
0 0
8
Cathode rays are deflected by
(a) electric field only (b) electric and magnetic field
(c) magnetic field only (d) none of these
Cathode rays are deflected by both electric and magnetic field.
Akhileshwar
0 0
9

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