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An element has electronic configuration 2, 8, 18, 1. If its atomic weight is 63, then how many neutrons will be present in its nucleus: (1) 30 (2) 32 (3) 34
The series limit for Balmer series of H-spectra is: (1) 3800 (2) 4200 (3) 3646 (4) 4000 Ans: 3646
Being simultaneously basic and acidic, water undergoes autoprotolysis, also called self-ionization: The equilibrium constant is H3O+ in these equations is gene
why do we add HCl in common ion effect of II froup
Synthesis of proteins : The DNA consists of the genetic code and directs protein synthesis by RNA. The two helix of DNA partly uncoils and approximately the individual strands
how did atoms appear
writethe sort farmula of learn the pariodik table.
Vacancies A vacancy is a lattice position that is vacant due to the atom is missing. It is formed when the solid is formed. Vacancies are simply empty atom site.
Q. How to calculate atomic mass of an element? Copper survive as a mixture of two isotopes. The lighter isotope (Cu-63) amid 29 protons and 34 neutrons makes up 69.17% of coppe
The atomic orbitals are progressively filled in order of increasing energy. This principle is called as: (1) Hund's rule (2)Aufbau principle (3) Exclusion principle (4
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