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Q. Explain about Atomic Radius?
The atomic size decreases with increase in atomic number along any period in the long form of the periodic table due to increase in effective nuclear charge. Though, the decrease in atomic radius is small when the difference in electronic configuration from one element to the next is that of an additional inner electron. This is due the additional inner electron screens the size-determining outer electrons from the nucleus much better than an additional outer electron. For example, decrease in the covalent radius from Sc to Zn; i.e., across ten elements of the 3d transition series, is 19 pm. this. Decrease is almost one-third of the decrease in the covalent radius of the seven elements of s and p blocks of the period 3.
properties of atom
Saturated and unsaturated compounds If, in an organic compound consisting of two or more carbon atoms, there are just only single bonds among carbon atoms, after that the comp
conclusion topic
In industries 653k is very low temperature so co is the best reducing agent.
Calculate the free energy change of following reaction at298 kelvin H2+I2=2HI if the enthalpy change is 51.8816kj and the entropy change is 166.15j is this reaction thermodyanamica
Question : (i) What is meant by Integrated Coastal Zone Management? (ii) What is its main objective? (iii) List the principal measures involved in the implementatio
AT 25 DEGREES CELCIUS,THE MOLAR IONIC CONDUCTIVITIES OF CALCIUM IONS,MAGNESIUM IONS AND ZINC IONS 3.87,5.01 AND 7.35 MILISECONDS SQUARE METRE PER MOLE RESPECTIVELY.CALCULATE THEIR
Uses of Alkyl nitrites (1) Ethyl nitrite dialates the blood vessels and so accelerates pulse rate and lowers blood pressure thus it is utilized for a medicine for the treatment
Q1. a). Using diagram, explain how fluorescence detector optical bench works (5 marks) (b). Explain the applications of mass spectrometric detector (LC/MS) in HPLC (5 mar
#questionprepare acetaldehyde from acetylene ..
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