Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Platinum:
Atomic number
78
Symbol
pt
Atomic weight
195.09
Discovery
Olloa 1735
Electronic configuration
5d9
Melting point
17750C
Electrical resistivity
10.9*10-8 ohm-m.
Properties:
1. It is a white greyish metal.
2. It has a good tensile strength.
3. It is one of the most stable metals under combined action of corrosion and electrical erosion.
4. It does not corrode under most adverse atmospheric condition.
5. It can be easily drawn into wires.
Uses: Platinum finds application as a heating element in laboratory ovens and furnaces. Platinum-rhodium thermocouple is used for measurement of temperatures up to 16000C. It is also used as electrical contact material and as material for grids in special purpose vacuum tubes.
Tell some examples of Like and Unlike Parallel Forces.
Drake equation (F. Drake; 1961) A technique of estimating the number of intelligent, technological species (that means, able to communicate along with other species) in existe
Ammeter: An electromechanical instrument which is used to calculate the amount of current flowing by an electric circuit is known as an ammeter. It is modified form of a gal
as flux = E.A and flux density is equal to flux/A then why A/A cannot e cancelled ?
SMALL ALKALINE CELLS: Hermetically sealed Ni-Cad cells are produced in the same size and shape as their primary counterparts. They are small, portable and maintenance free, but
What makes a flashlight suddenly become dim or bright when you shake it?
A solid substance has a molar volume which is smaller than that of its liquid phase. Which of the following statements regarding the solid-liquid phase transition is/are true?
How does the distance between fringes in Young's double slit experiment change. a) If the colour of the light is changed from red to blue? b) If the slit separation is incre
a picture frame is hanging by two verticle strings the tention in the string are 3.8N and 4.4N find the weight of the picture frame
Chemical action in lead acid battery: When the lead acid battery is delivering current, the sulphuric acid breaks up into Hydrogen ions (H 2 ) carrying a positive charge and Su
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd