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Q. What is Base units?
There are seven base units given in SI. A base unit is a unit of calculate that is based on an object or event in the physical world. Lists of the seven SI base units their abbreviations and the quantities they are used to measure.
SI Base Units
Time
second (s)
Length
meter (m)
Mass
kilogram (kg)
Temperature
kelvin (K)
Amount of a substance
mole (mol)
Electric current
ampere (A)
Luminous intensity
candela (cd)
SI is based on a decimal system consequently are the prefixes in next table which are used to extend the range of SI units.
i need equivalent weight aluminum alloy 2024
Saturated and unsaturated hydrocarbons The compounds of carbon and hydrogen in which carbon atoms are linked to each other by single covalent bonds(C-C) are known as alkanes. T
It is Hydrated Potassium Aluminium Sulfate [ KAl(SO4)2·12H2O ].
The energy required to dislodge electron from excited isolated H-atom, IE 1 = 13.6 eV is: (1) = 13.6eV (2) > 13.6eV (3) 3.4 eV
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AS THIS ALKALI METALS HAS LARGE SIZE AND LESS IONISATION ENERGY THEY LOSE THEIR OUTERMOST ELECTRON EASILY. PHOTOELECTRIC EFFECT MEANS EJECTION OF ELECTRONS FROM A METAL WHEN THEY
if the bond length in chlorine molecule is 1.98 angstrom and bond length in H-CL molecule is 1.76 angstrom calculate the covalent radius of hydrogen
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