the total number of particles is provided in table one as 133 this is the sum of all the isotopes of Mnmium. you will use this value to do table 2 by dividing each isotope by the total number of particles (133).
silicone has an average atomic mass of 28.085 according to the periodic table, this tells us that the Si28 should be the most abundant isotope of the three
to calculate the average atomic mass of silver, we are given the abundance of each isotope and the formula to calculate the average atomic mass is (mass of isotope 1 x abundance percentage) plus (mass of isotope 2 x abundance percentage)...... so the average atomic mass of silver would be ( 107 x 52%) + (109x48%) = 107.96 this value is closer to the atomic mass of silver 107 because it is the most abundant
from the pie chart it is clear to see that Chlorine-35 is the most abundant at 76%
we will determine the average atomic mass of chlorine using the same formula as with silver for the previous question. Chlorine-35 is 76% and Chlorine-37 is 24% therefore (35x 76%)+(37x24%) = 35
Answer:Percent error= 90.9%
Explanation:
Percent error or percentage error is defined as the percentage of the difference between a measured value usually from an experiment and an exact value in comparison to the exact number.
its formula is thus
Percent error = experimental value - exact or actual value /exact value x 100
=(18.9 - 9.9 /9.9 ) x 100= 9/9.9) x 100
0.909 x 100 = 90.90 = 90.9%
While staying in the same period, if we move from left to right across the period, the atomic radius decreases. The reason is, in a period the number of shells remain the same and the number of electrons and protons increase as we move across the period to the right. The increased electrons and protons attract each other with greater force and hence the atomic size decreases.
So the element on the left most will have the largest atomic radius. So the correct ans is Potassium. Potassium will have the largest atomic size among Potassium, Calcium and Scandium.
<span>Not all solids melt when they are heated. Some may undergo chemical changes as a result of heating. For example paper burns rather than melts</span>
