Chemistry-
General
Easy
Question
For any H like system, the ratio of velocities of I,II&III orbit i.e.V1 :V2 :V3 will be
- 1:2:3
- 1:1/2:1/3
- 3:2:1
- 1:1:1
The correct answer is: 1:1/2:1/3
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An isotone of 32Ge76 is
i) 32Ge
ii)33As
iii)34Se77
iv)34Se78
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iv)34Se78
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b)CO2&laughinggas
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Which of the following statement concerning the two isotopes 13Al27 and 14Si27 are not incorrect
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chemistry-General
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The electronic configuration of adi positive metal ion M2+ is 2,8,14and its ionic weigth is 58a.m.u.Thenumberofneutrons in its nucleus would be:
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The ratio of spectific charge of a proton and are α-particle is:
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Select isoelectronic set:
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c)P-3 ,HCl,C2H6,PH3
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a) Na+, H3O+,NH4+
b)CO-23 ,NO3,HCO3
c)P-3 ,HCl,C2H6,PH3
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chemistry-General
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No. of all sub shells of n+ι=7 is -
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The atom A,B,C have the configuration A→[Z(90)+n(146)],B→[Z(92)+n(146)] C→[Z(90)+n(148)] so that:
a)A and C-Isotones
b)A and C-Isotopes
c)A and C-Isobars
d)B and C-Isobars
e)B and C–Isobars The wrong statement’s are:
The atom A,B,C have the configuration A→[Z(90)+n(146)],B→[Z(92)+n(146)] C→[Z(90)+n(148)] so that:
a)A and C-Isotones
b)A and C-Isotopes
c)A and C-Isobars
d)B and C-Isobars
e)B and C–Isobars The wrong statement’s are:
chemistry-General