QUESTION 1
The number of protons are 47 protons (answer B)
Explanation
Protons are sub atomic particles found in nucleus of every atom. protons in element's nucleus is called atomic number.
In isotope notation of an element atomic number is written lower left of element symbol while mass number is written above .
Since 47 is written on lower left in 108/47 Ag, it is the number of protons.
Question 2
The number of neutrons = 146 ( answer D)
Explanation
number of neutrons = mass number - number of protons
In isotope notation the mass number is written on upper left of element symbol while number of protons are written below .
Therefore in 238/92 U ,
238 = mass number
92 = number of protons/ atomic number
Number of protons is therefore = 238-92 = 146 (answer D)
