Isotopes, Mass Number and Atomic Theories
Quiz by Ranaz Omar
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10 questions
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- Q1Isotopes of an element have the same number of __________.neutronsvalence electronsprotonselectrons30s
- Q2What is the average atomic mass?The number of neutrons in an atom of an elementThe weighted average of the masses of all naturally occurring isotopes of an elementThe number of protons in an atom of an elementThe mass of an atom of an element30s
- Q3What is the unit used to measure average atomic mass?Atomic mass unit (AMU)Pound (lb)Meter (m)Kilogram (kg)30s
- Q4Thomson's model was called _______Cathode ray modelGold Foil modelOil drop modelPlum pudding model30s
- Q5Millikan determined the ___________ with the help of his oil drop experimentcharge and mass of the neutronmass of the electroncharge and mass of the electronCharge and mass of the protons30s
- Q6What is the mass number and name of the element shown in the image?56, Iron.39, Potassium35, Chlorine127, Iodine30s
- Q7According to the law of definite proportion, what happens to the mass ratio of elements in a compound?It is determined by the amount of the compoundIt depends on the pressure appliedIt remains constantIt changes over timeIt varies depending on the temperature30s
- Q8Which one of the following compounds is according to the Law of Multiple proportionsCO and NOCO and CO2NaF and NaClFeO and KCl30s
- Q9How many protons and neutrons does the element in the image have70 protons and 197 neutrons50 protons and 197 neutrons79 protons and 118 neutrons197 protons and 79 neutrons30s
- Q10Identify the element shown in the image.AgPbAuBr30s
