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What is the atomic number and atomic mass number of chlorine?
The atomic number of chlorine is 17, which indicates the number of protons in its nucleus. The atomic mass number of chlorine is about 35.5, which represents the average mass of its isotopes considering their relative abundances.
What is the name of the element with an atomic mass of 197?
Gold seems the only one possible.
Do you need atomic number to find atomic mass?
No, you do not need the atomic number to find the atomic mass of an element. The atomic mass is the weighted average of the masses of the isotopes of an element, whereas the atomic number is the number of protons in the nucleus.
What element has a 27 atomic mass?
The element with an atomic mass of 27 is cobalt (Co). Cobalt is a transition metal found in the periodic table with atomic number 27.
Is the atomic weight of chlorine 35.5 because of electrons?
No, electrons only make a negligible contribution to atomic weight. On the periodic table the atomic weight listed for most of the elements is the average of that element's isotopes. Chlorine has 2 common isotopes: Chlorine-35 (75.77% of all chlorine) and chlorine-37 (24.23%) This works out to an average mass of about 35.5.
What is the atomic number and atomic mass number of chlorine?
The atomic number of chlorine is 17, which indicates the number of protons in its nucleus. The atomic mass number of chlorine is about 35.5, which represents the average mass of its isotopes considering their relative abundances.
Which element have the atomic mass of 1?
The only such element is hydrogen.
What is the name of the element with an atomic mass of 197?
Gold seems the only one possible.
What two elements have an atomic mass of 1?
only one element (hydrogen) has the atomic mass of 1.
What is the atomic mass for oxide?
It doesn't have an Atomic Mass, it is not an element (pure substance) it is a compound and therefore only has a molar mass.
Do you need atomic number to find atomic mass?
No, you do not need the atomic number to find the atomic mass of an element. The atomic mass is the weighted average of the masses of the isotopes of an element, whereas the atomic number is the number of protons in the nucleus.
What element has a 27 atomic mass?
The element with an atomic mass of 27 is cobalt (Co). Cobalt is a transition metal found in the periodic table with atomic number 27.
Is the atomic weight of chlorine 35.5 because of electrons?
No, electrons only make a negligible contribution to atomic weight. On the periodic table the atomic weight listed for most of the elements is the average of that element's isotopes. Chlorine has 2 common isotopes: Chlorine-35 (75.77% of all chlorine) and chlorine-37 (24.23%) This works out to an average mass of about 35.5.
How do you calculate average atomic masses of elements?
Many elements consist of more than one naturally occurring isotope. The average atomic mass of an element is the "weighted" average. This means that more "weight" or importance is given to the isotope which is in greater natural abundance.We know the percentages of each isotope. To do the calculation we will express each percentage as its corresponding decimal fraction.Average atomic mass = (fraction1 x atomic mass1) + (fraction2 x atomic mass2) + (fraction3 x atomic mass3) ...Cstspeedy has given you the gist of the calculation, and has mentioned that the numbers used will only produce an approximation of the average atomic mass. What should be used are more precise measurements of the percent abundances and the actual masses of the isotopes.This is the important part. The mass numbers are NOT the actual masses of the isotopes. They are close, but not the same. The actual isotopic masses are known very precisely.For instance, Cl-37 has a mass of 36.965902591 amu. We don't need to use all those digits, but they represent the actual mass of the isotope.So for the chlorine example, where there are only two naturally occurring isotopes, you would use the following. 75.58 percent of chlorine atoms are chlorine-35 and 24.22 percent of chlorine atoms are chlorine-37.The average atomic mass = 0.7578 x 34.9689 + 0.2422 x 36.9659 = 35.453 amu
What is the atomic mass for the element carbon is 12.011?
the atomic mass of just pure carbon would be twelve. the atomic mass is only effected by the number of protons and numbers of nuetrons
Which element has an atomic mass of11?
Atomic mass numbers are not properties of elements overall, but only of particular isotopes of elements. The only stable element with an isotope with mass number 11 is boron. Beryllium and carbon also have isotopes with mass number 11, but these are radioactive.
How do you find the number of neutrons in a element using only mass and the element name?
To find the number of neutrons in an element, subtract the atomic number (number of protons) from the atomic mass number (rounded mass of the element). The atomic number can be determined from the element's position on the periodic table.
