Ionic bond,

Spectrometry, a sophisticated ultra/visible/near-IR instrument has a wavele...

a sophisticated ultra/visible/near-IR instrument has a wavelenght range of 185 TO 3000 nm.What are its Wave number and frequency ranges ?

Nonstoichiometry, Whereas a pure molecular species has a definite stoichiom...

Whereas a pure molecular species has a definite stoichiometry, this is not often true for solids. Defects in crystals will include vacancies (atoms missing from their expected site

A covalent bond between two elements, A covalent bond is likely to be form...

A covalent bond is likely to be formed between two elements which: (1) Have similar electronegativities (2) Have low ionization energies (3) Have low melting points (4

Properties of unsaturated halides (halo-alkene), Properties of Unsaturated ...

Properties of Unsaturated halides (Halo-alkene) Halo-alkene is a colourless gas at room temperature. The boiling point of it is -13°C. The halogen atom in vinyl chloride is not

Steam supply for experiments in heat, Steam  supply  for experiments in hea...

Steam  supply  for experiments in heat A tin with  a  press-on lid may be used to make a steam can. Punch two holes  in  the  lid  and solder by them one long and one short pip

Difference between dna and rna, Difference between DNA and RNA ...

Difference between DNA and RNA DNA RNA DNA has a double helix structure. RNA comprises a single helix structure.

Volume of diatomic gas, Volume of diatomic gas is less than the monatomic g...

Volume of diatomic gas is less than the monatomic gas , although diatomic gas has 2 moles ( 2 times atomes) than monoatomic gas ?? Ans) The answer is derived by avogadros law

The correct sets of the four quantum numbers 4d electron, Which of the fol...

Which of the following represents the correct sets of the four quantum numbers of a 4d  electron: (1)  4,3,2,1/2                        (2) 4, 2, 1, 0 (3)  4,3,-2+1/2

Explain a first order reaction, A first order reaction takes 69.3 minutes f...

A first order reaction takes 69.3 minutes for 50% completion. Set up an equation for determining the time needed for 80% completion of this reaction.