Question

Write the atomic symbols for isotopes with the following characteristics?

1)an oxygen atom with 10 neutrons
2)a neon atom with twelve neutrons
3)25 electrons and 28 neutrons
4)a mass number of 24 and 13 neutrons
5)a titanium atom with 25 neutrons

Answer 1

To write the atomic symbols for isotopes, we need to include the atomic number and the mass number. The atomic number represents the number of protons in the nucleus, while the mass number represents the total number of protons and neutrons. For example, an oxygen atom with 10 neutrons would have the atomic symbol O-18.

Step-by-step explanation:

To write the atomic symbols for isotopes, we need to include the atomic number and the mass number. The atomic number represents the number of protons in the nucleus, while the mass number represents the total number of protons and neutrons.

1. For an oxygen atom with 10 neutrons, the atomic symbol would be O-18. (8 protons + 10 neutrons = 18 mass number)
2. For a neon atom with twelve neutrons, the atomic symbol would be Ne-22. (10 protons + 12 neutrons = 22 mass number)
3. For an atom with 25 electrons and 28 neutrons, the atomic symbol would depend on the element. However, titanium has 22 electrons, so it couldn't be titanium. It could be another element, possibly manganese, with the symbol Mn-53. (25 protons + 28 neutrons = 53 mass number)
4. A mass number of 24 and 13 neutrons could represent different elements. Without knowing the atomic number, it's difficult to determine the atomic symbol.
5. A titanium atom with 25 neutrons would have the atomic symbol Ti-50. (22 protons + 25 neutrons = 50 mass number)

Answer 2

The isotopes are represented with two numbers before the atom symbol. One number means the atomic number (number of protons) and is placed on the left lower corner, the other number is that mass number (number of protons and neutrons) and is placed on the right upper corner. With that, 1) (8, 18) O: 8 is the atomic number and 18 is the mass number; 2) (10, 22) Ne: 10 is the atomic number and 22 is the mass number; 3) (25, 53) Mn: 25 is the atomic number and 53 is the mas number; 4) (11, 24) Na: 11 is the atomic number and 24 is the mass number; (22, 47) Ti: 22 is the atomic number and 47 is the mass number. The two numbers are placed without parentheses, again atomic number on the left lower corner and the mass number on the left upper corner.