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Ionic bonds are usually formed by combination of elements with:
(1) High ionisation potential and low electron affinity
(2) Low ionisation potential and high electron affinity
(3) High ionisation potential and high electron affinity
(4) Low ionisation potential and low electron affinity
Ans: Low ionisation potential and high electron affinity
If the atomic weight of an element is 23 times that of the lightest element and it has 11 protons, then it contains : (1)11 protons, 23 neutrons, 11 electrons (2)11 protons,
Problem 1: Briefly describe about the stage of research prior to drug development. Definition of drug development Stage of research prior to drug development P
Calculate the energy required to compress carbon dioxide from 1 bar to 50 bar (final volume is 50 ml, 298 K, ideal gas).
How is kostenecki synthesis of flavonoid used to identify and optimise flavonoid?
What is the electronic configuration of Cu 2+ (Z= 29) of least position: (1) [Ar]4s 1 3d 8 (2) [Ar]4s 2 , 3d 10 4p 1 (3) [Ar]4s 1 3d 10
INTRODUCTION : In this exercise you will learn various steps and procedures adopted while purchasing lab-related items. This exercise will acquaint you with practices of preparing
High energy bond in the intermediary metabolism
Resonance effect or mesomeric effect (1) The effect where electrons are transferred from a multiple bond to a molecule, or from a multiple bond to a one covalent bond or lone p
In a Bohr's model of atom when an electron jumps from n= 1 to n= 3 , how much energy will be emitted or absorbed: (1) 2.15 x10 -11 erg (2) 0.19
The electronic configuration (outermost) of Mn +2 ion (atomic number of Mn= 25 ) in its ground state is: (1) 3d 5 , 4s o (2) 3d 4 , 4s 1 (3
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