I have to write a bunch of atomic symbol for these isotopes and I don't understand how to I do it.
(a) atomic number=53, number of neutrons=79
I looked at the periodic table for 53 so the element is Iodine. So They gave the atomic number and I have the element, I need the mass #...
(b) number of protons = 29, mass number = 65
Would the element be Cu (Copper)?
(c) number of protons = 27, number of neutrons =31
element is Co (cobalt) ?
mass number= I don't know how to get that.
Please help me, thank you!
mass number = number of protons + number of neutrons.
b. Yes, Cu is element #29. This isn't difficult. The atomic number is the number of protons, the mass number is number of P + neutrons of n. If you can count from 1 to 116 or so you can look these up on the periodic table.
Thanks! It's been awhile since I took chemistry.
(a) To determine the atomic symbol for the given isotope, you need to find the element on the periodic table with atomic number 53. As you correctly identified, the element is Iodine (I).
To find the mass number, you can add the number of protons (atomic number) to the number of neutrons. In this case, atomic number = 53 and the number of neutrons = 79. Therefore, the mass number can be calculated as follows:
Mass number = Atomic number + Number of neutrons
Mass number = 53 + 79
Mass number = 132
So the atomic symbol for this isotope is ^132I.
(b) You mentioned that the number of protons is 29 and the mass number is 65.
The element with 29 protons is indeed Copper (Cu). To determine the number of neutrons, you can subtract the atomic number (which represents the number of protons) from the mass number.
Number of neutrons = Mass number - Atomic number
Number of neutrons = 65 - 29
Number of neutrons = 36
Hence, the atomic symbol for this isotope is ^65Cu.
(c) Given that the number of protons is 27 and the number of neutrons is 31, you identified the element as Cobalt (Co) correctly.
To find the mass number, you can add the number of protons (atomic number) to the number of neutrons. In this case:
Mass number = Atomic number + Number of neutrons
Mass number = 27 + 31
Mass number = 58
Thus, the atomic symbol for this isotope is ^58Co.
To determine the atomic symbol for an isotope, you need to understand the concept of atomic number and mass number.
The atomic number represents the number of protons in an atom, which uniquely identifies the element. It is usually found on the upper left corner of an element's symbol in the periodic table.
The mass number represents the total number of protons and neutrons in the nucleus of an atom. To find the mass number, you need to add the number of protons (atomic number) and the number of neutrons.
Now let's find the atomic symbols for the given isotopes:
(a) The atomic number is 53, which corresponds to the element iodine (I). The number of neutrons is 79. To find the mass number, we add the atomic number (53) and the number of neutrons (79):
Mass number = Atomic number + Number of neutrons
Mass number = 53 + 79
Mass number = 132
Therefore, the atomic symbol for this isotope is ^132I.
(b) The number of protons is 29, which corresponds to the element copper (Cu). The mass number is given as 65:
Atomic symbol = Element symbol + Mass number
Atomic symbol = Cu + 65
Therefore, the atomic symbol for this isotope is ^65Cu.
(c) The number of protons is 27, which corresponds to the element cobalt (Co). The number of neutrons is 31. To find the mass number:
Mass number = Atomic number + Number of neutrons
Mass number = 27 + 31
Mass number = 58
Therefore, the atomic symbol for this isotope is ^58Co.
Remember to always refer to the periodic table to find the atomic number and symbol of elements.