Subject :NSO Class : Class 9
Class : Class 9
Option B is wrong . As it is talking of the energy shell.
OR might be the question is incorrect as the all the options are correct as per my information.
Class : Class 9
ans should no doubt be c because of the Hund 's rule and also fifth shell does accommodate 50 electrons according to 2n^2 :2*5^2=2*25=50.
Subject :NSO Class : Class 9
Ans 1:
Class : Class 9
Volume of the solid cube =(25*25*25)/1000000 cubic metre.
Mass of the solid cube = the mass of the body which can be placed on it to completely submerge it
Density = 0.1kg/ 125*(10)^6=800kg/m^3
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 9
The outer shell electrons in compound PQ3 are shown in the given figure.
Which of the following could be the correct
representation of elements P and Q?
P | Q | No. of neutrons in P and Q | Valency of P and Q | |
A | Cl | N | 7 and 15 | 3 and 3 |
B | N | Cl | 5 and 17 | 5 and 3 |
C | P | Cl | 16 and 18 | 3 and 1 |
D | O | F | 8 and 9 | 2 and 1 |
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 7