Structure of atom, energy of electron in hydrogen atom

energy of electron in hydrogen atom

why do soaps not work under hard water , The Ca 2+ and Mg 2+ ions in har...

The Ca 2+ and Mg 2+ ions in hard water form scum with soap. Therefore they don''t form lather and therefore don''t clean the dirt.

F-block elements, electronic cofiguration of f-block elements

electronic cofiguration of f-block elements

Ionic bond,

Pronouns, i am not able to understand difference between emphasising and re...

i am not able to understand difference between emphasising and reflexive pronoun

An ion has 18 electrons in the outermost shell, An ion has 18 electrons in ...

An ion has 18 electrons in the outermost shell, it is: (1)  Cu +                (2) Th 4+                             (3) Cs +                       (4) K + Ans

Organic, ester formation

ester formation

.bohr''s atomic model, what were the drawbacks of bohr''s atomic theory

what were the drawbacks of bohr''s atomic theory

Covalent bonding, Covalent Bond Purely electrostatic attractions between...

Covalent Bond Purely electrostatic attractions between ions are nondirectional, but with increasing covalent character the directional properties of valence orbitals become more

Define heat and temperature, Q. What is basic diffrence between heat and te...

Q. What is basic diffrence between heat and temperature? Ans. Heat is energy which flows from hot objects to cooler ones.  It flows because of the temperature difference betw