20. the mass of an atom is determined by the sum of the number of neutrons and protons the atom has.
Boron typically has 5 neutrons, as the mass number is the sum of the protons and neutrons in the nucleus. In this case, with a mass number of 10, and Boron having 5 protons (atomic number 5), the number of neutrons is 5 (10 - 5 = 5).
A neutral atom of neon with atomic number 10 has 10 protons and 10 electrons. The mass number of 22 indicates the total number of protons and neutrons combined. Since the atomic number is 10, the number of neutrons is 22 - 10 = 12.
The mass number is the sum of protons and neutrons, so it would be 9 (protons) + 10 (neutrons) = 19. The atomic number corresponds to the number of protons, which is 9 in this case.
The mass number of ammonia is 17. This is calculated by adding the number of protons and neutrons in the nucleus, which for ammonia (NH3) is 7 protons and 10 neutrons.
This atom would have 10 protons, 10 electrons, and 14 neutrons. The atomic number (10) represents the number of protons, the mass number (24) is the sum of protons and neutrons, and since atoms are electrically neutral, it would have the same number of electrons as protons.
To find the number of protons, you need to subtract the number of neutrons from the mass number. In this case, the atom has a mass number of 19 and 10 neutrons, which means the number of protons is 19 - 10 = 9 protons.
The mass number of this atom is 23, the sum of the number of protons and neutrons.
sodium has more protons and neutrons. electrons have practically no mass, valence electrons are just outer orbital electrons. sodium has 11 protons, 11 electrons, and 12 neutrons. Mass is 23. neon has 10 protons, 10 electrons, and 10 neutrons. Mass is just 20. The neon atom has 10 protons and 10 neutrons for a mass number of 20. The sodium atom has 11 protons and 12 neutrons for a mass number of 23. The number of valence electrons has no bearing on mass number or atomic weight.
The isotope (^{10}\text{B}) (Boron-10) has a mass number of 10, which means it contains a total of 10 protons and neutrons combined. Since Boron (B) has an atomic number of 5, it has 5 protons. Therefore, the number of neutrons can be calculated as 10 (mass number) - 5 (protons) = 5 neutrons. Thus, (^{10}\text{B}) has 5 protons and 5 neutrons.
Boron typically has 5 neutrons, as the mass number is the sum of the protons and neutrons in the nucleus. In this case, with a mass number of 10, and Boron having 5 protons (atomic number 5), the number of neutrons is 5 (10 - 5 = 5).
The mass number of an atom, also known as the atomic mass number, is the sum of protons and neutrons in the nucleus. In this case, an atom with 6 protons and 10 neutrons would have a mass number of 16.
A neutral atom of neon with atomic number 10 has 10 protons and 10 electrons. The mass number of 22 indicates the total number of protons and neutrons combined. Since the atomic number is 10, the number of neutrons is 22 - 10 = 12.
The mass number of an atom is the number of protons plus the number of neutrons in its nucleus. So an atom with 15 protons and 10 neutrons would have a mass number of 15 + 10 = 25.
The mass number is the sum of protons and neutrons, so it would be 9 (protons) + 10 (neutrons) = 19. The atomic number corresponds to the number of protons, which is 9 in this case.
The symbol for the isotope would be B and the atomic number would be 5, as the mass number is the sum of the protons and neutrons in the nucleus, so in this case: 5 protons + 10 neutrons = mass number 15.
The atomic number of element X is determined by the number of protons, which is 7. For the second isotope, which has 10 neutrons, the mass number is the sum of protons and neutrons, calculated as 7 protons + 10 neutrons = 17. Therefore, the second isotope has an atomic number of 7 and a mass number of 17.
The mass number of ammonia is 17. This is calculated by adding the number of protons and neutrons in the nucleus, which for ammonia (NH3) is 7 protons and 10 neutrons.