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The nitride ion in lithium nitride is composed of:
(1) 7 protons + 10 electrons
(2) 10 protons + 10 electrons
(3) 7 protons + 7 protons
(4) 10 protons + 7 electrons
Ans: 7 protons + 10 electrons
The frequency corresponding to transition n= 2 to n =1 in hydrogen atom is: (1) 15.66 x 10 10 Hz (2) 24.66 x 10 14 Hz (3) 30.5
When are conditions right for harvesting a crop? When the crop is ready for harvest, will depend largely on weather conditions and the state of the market. When the deci
The valency of sulphur in sulphuric acid is: (1) 2 (2) 4 (3) 6 (4) 8 Ans: 6
What are the different mechanism to produce methanol(CH3OH)?
Q. Describe properties and uses of different silicate glasses and also discuss the importance of annealing in the manufacture of glass.
Coordination Position Isomerism: If in a multinuclear complex the distribution of ligands around the metal centres changes it will result in a different isomer. Such an isomerism
Ask question #periodic properties #
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i need help finding information with the element sodium
Q. How do we measure food texture? Food texture can be evaluated by mechanical test or instrumental methods. This is called as objective evaluation. When we use the human sens
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