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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.
Q. What is Atomic emission spectra? Atomic emission spectra while atoms of an element in the gaseous phase are excited by an input of energy such as that from a high-voltage
assignement
why is density of interstitial compounds less than that of parent metal ?
Q.How can we determine Concentrations of Solutions? Ans. The concentration of a solution is the quantitative expression of the amount of solute dissolved in the solution.
Q. What Numerical prefixes indicate in ligands? In any complex species, the ligands are quoted in alphabetical order, without regard to charge, before the name of the central m
Q. What do you mean by Solids Non-Fat? Solid non-fat is an important criterion of milk selection for further processing. Milk solids non-fat would include the nitrogenous subst
What methods can I use to understand balancing equations?
The interatomic distances in H 2 and Cl 2 molecules are 74 and 198 pm respectively. The bond length of HCl is : (1) 272 pm (2) 1
WHAT IS THE INITIAL CONCENTRATION
determine the no of atom in 4.5g of k
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