Unanswered Atomic Structure Questions

what is an electron cloud ...

Avagadro Number is the reciprocal of which number? (a)Mass Number (b)Atomic Number (c)Mass of a proton (d)Mass of an electron ...

The freauency of one of the lines in Paschen series of a hydrogen atom is 2.34 imes {10^{14}} Hz. The quatum number, {n_2} which produces this transitions is – a) Three b) Four c) Six d) Five ...

Give the correct order of electronegativity of the central atom in the following compounds : a) CH3 - CH3(Ethane) 4) CH2 = CH2(Ethene) 5) CH ≡ CH (Ethyne) Also give your reasoning for the same. ...

The frequency of one of the spectral lines in the Paschen series is 2.34 * 1014 Hz. Find the principal quantum number which produces this radiations. (Please show your working) ...