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5th electron is extra of P And delocalisation of electron increase conductivity & this increment is due to negative charged electrons therefore P is doped Si is semi conductor

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Payal Verma 7 years, 8 months ago

Since phosphorus has high number of electrons therefore it creates a hole and also it has unpaired electrons. Hence, it acts as a p-type semi-conductor.

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refractive index of a solid is observed to have the same along value all directions

Posted by Rohan Chaudhary 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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Out of bacl2 and kcl which one is more effective in causing coagulation of a negatively charged colloidal sol give reason

Posted by Kunal Pachisiya 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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How is Ozone estimated quatitatively

Posted by Aj Style 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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B P is depends upon surface area then on what factor does M P depends?

Posted by Aj Style 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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Aj Style 7 years, 8 months ago

Rishabh please explain briefly

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Rishabh Sahu 7 years, 8 months ago

Melting point depends upon the arrangement of atoms and molecules in the crystal lattice.

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Shivam Gupta 7 years, 8 months ago

Intermolecular forces

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Hi plz tell how to find log and antilog

Posted by Aarti Sharma 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Rishabh Sahu 7 years, 8 months ago

There is no formula to find the logarithm of a number. If one knows which value will satisfy the log then he or she can substitute the log value directly , otherwise One has to use the log table to substitute its value . How to use a log table is difficult to describe . The best way is to ask your maths or chemistry teacher how to use it because it may come as a part of your exam.

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Hii i need full electrochemical series but i. Not got it in internet plz anyone give website where i get whole series plz tell

Posted by Yuvraj Singh 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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For a solution of acetone in choloroform Henry's law constant is 150torr at 300k.calculate the partial pressure of acetone when its mole fraction is 0.12.

Posted by Bikram Das 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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how to calculate the uncertainity inposition of an electron

Posted by Ayushi Singh 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Rishabh Sahu 7 years, 8 months ago

Uncertainty in position of electron can be approximated by Heisenberg uncertainty principle Δ x. Δ p≥h/4π when the value of Δ p the uncertainty in momentum is known.

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what is retention , inversion, racemization please answer me fast

Posted by Rhitika Rai 7 years, 8 months ago

CBSE > Class 12 > Chemistry

2 answers

Rishabh Sahu 7 years, 8 months ago

Relative order of groups of the molecule molecules.

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Rishabh Sahu 7 years, 8 months ago

Inversion - when on undergoing substitution the relative order of arrangement of non substituted groups changes without change in structure then this change is said to be or described as inversion if this arrangement doesn't change then it's retention. When a molecule undergoes a substitution reaction such that both inverted and retained moleculess are produced in the same amount then this process is racemisation.

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what is ambident nucleophile

Posted by Rhitika Rai 7 years, 8 months ago

CBSE > Class 12 > Chemistry

2 answers

Sambhav Tyagi 7 years, 8 months ago

Species having two nucleophilic centres like cynide (CN).In cynide both carbon and nitrogen have tendency to give electrons .

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Milan John 7 years, 8 months ago

Ambident nucleophile is an anionic nuclephile whose negative charge is delocalised by resonance, over two unlike atoms or two but non-equivalent atoms.

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Percentage dissosciation of solution of NH4OH if the molar conductivity of 0.01M solution of NH4OH is 9.33S c/m/mol

Posted by Diksha Gupta 7 years, 8 months ago

CBSE > Class 12 > Chemistry