Structure of Atom

Class 11 · Chemistry

101 questions39 easy39 medium23 hard

Sample Questions

Q1.The de Broglie wavelength of an electron accelerated through a potential difference V is:

Aλ = h/√(2meV)
Bλ = h/√(meV)
Cλ = √(2meV)/h
Dλ = h²/(2meV)

Q2.In an electromagnetic wave, electric and magnetic fields oscillate:

APerpendicular to each other and to the direction of propagation
BParallel to each other and to the direction of propagation
CPerpendicular to each other but parallel to direction of propagation
DAt 45° to the direction of propagation

Q3.According to Bohr's model, the radius of the nth orbit of hydrogen atom is proportional to:

An²
Bn
C1/n²
Dn³

Q4.If an electron in a hydrogen atom transitions from n = 4 to n = 2, the emitted photon belongs to which series?

ABalmer series
BLyman series
CPaschen series
DBrackett series

Q5.The photoelectric effect cannot be explained by the wave theory of light because:

AEmission depends on frequency, not intensity of light
BEmission depends on intensity of light
CElectrons are not emitted by metals
DLight has zero rest mass

Q6.This is a sample question to preview what you'll get in the full practice test...

A. Option one
B. Option two
C. Option three
D. Option four

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Concepts Covered

1s orbital3p orbital4s vs 3d energyBalmer seriesBohr modelBohr model energy levelsBohr model limitationsBohr radiusBohr's postulatesChadwickDavisson-Germer experimentEinsteinFe2+ configurationHeisenberg uncertainty principleHund's ruleLyman seriesM shellMillikanN shellNa+Paschen seriesPauli exclusion principlePlanck's constantPlanck's equationPlanck's quantum theoryRutherford experimentRutherford modelRutherford model limitationsRydberg constantRydberg equationRydberg formulaSchrödinger equationStark effectThomson modelThomson's experimentUV lightZeeman effectalpha particlesangular momentum quantizationangular nodesanode raysatomic dimensionsatomic modelsatomic models comparisonatomic orbitalatomic orbitalsatomic sizeatomic spectraatomic stabilityatomic structureatomic theoryaufbau principleazimuthal quantum numberbismuthcanal rayscathode ray tubecathode rayscharge-to-mass ratiochromiumclassical physicscopperd-orbital geometryd-orbital shapesd-orbitalsd-subshelld-subshell configurationd-subshell stabilityde Broglie wavelengthdegenerate orbitalsdiscovery of electrondx2-y2 orbitalelectric fieldelectromagnetic radiationelectromagnetic spectrumelectromagnetic waveselectron accelerationelectron capacityelectron chargeelectron configurationelectron diffractionelectron fillingelectron flowelectron masselectron propertieselectron removalelectron removal orderelectron spinelectronic configurationelectronic transitionsenergy calculationenergy gapsenergy levelsenergy quantizationenergy releaseenergy transitionsexceptional electronic configurationsf-orbitalsfrequencyfrequency ordergamma raysgold foilground stateheavy elementshydrogen atomhydrogen spectral serieshydrogen spectrumhydrogen-like ionshydrogen-like speciesinfrared spectrumionic electronic configurationionization energykinetic energyline spectrummacroscopic objectsmagnetic fieldmagnetic quantum numbermass comparisonmass ratiomatter wavesmomentum uncertaintyneutronneutron discoverynodal planenodal planesnodesnuclear chargenuclear modelnuclear reactionsnuclear sizeoil drop experimentorbit vs orbitalorbital energyorbital filling orderorbital geometryorbital nodesorbital orientationorbital radiusoxygen configurationp-orbital shapep-orbitalsparticle accelerationphotoelectric effectphotoelectric equationphoton energyphotonsphysical constantsplum pudding modelprincipal quantum numberprobability densityprotonproton discoveryproton massquantum calculationsquantum mechanical modelquantum mechanicsquantum numbersradial nodess-orbital shapeselection rulesseries limitspectral line splittingspectral linesspectral seriesspeed of lightspherical symmetryspin quantum numberstationary orbitsstopping potentialsubatomic particle massessubatomic particle propertiessubatomic particlessubshellsubshell compositionsubshell energy ordersubshell fillingsubshellsthreshold frequencytransition metal ionstransverse wavesuncertainty in velocityuncertainty principleunitsunpaired electronsvisible spectrumwave functionwave propertieswave theory limitationswave-particle dualitywavelengthwavenumberwork functionħ

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