The mass number of an isotope is the sum of its protons and neutrons. Calcium (Ca) has an atomic number of 20, meaning it has 20 protons. If the isotope has 24 neutrons, the mass number would be 20 protons + 24 neutrons = 44. Therefore, the mass number of this calcium isotope is 44.
Isotope 24Na (or Na-24) has 11 protons and 13 neutrons, its mass number is 24Isotope 23Na is the stable form of Na with 11 protons, 12 neutrons and with mass number 23.
The isotope notation for the element with an atomic number of 24 and a mass number of 52 is written as ( \text{^{52}_{24}\text{Cr}} ). Here, "Cr" represents chromium, which has an atomic number of 24. The mass number (52) indicates the total number of protons and neutrons in the nucleus of the atom.
A typical chromium atoms has 28 neutrons. Because electrons are so small, virtually all of the atomic mass comes from the protons and neutrons. By subtracting the number of protons (equal to the atomic number) from the total atomic mass, the number of neutrons is obtained. For chromium atomic mass- 52 atomic number (number of protons) - 24 number of neutrons 52-24=28
Scandium's, or Sc's, atomic number is 21. Its most common isotope has an atomic mass of 45. Since an electrically neutral atom's atomic number is equal to its number of protons as well as its number of electrons; and since the number of neutrons in a particular isotope of an atom is equal to its atomic mass minus its atomic number, the number of neutrons of the most common isotope of neutral scandium is 45 - 21 = 24.
The element Scandium (Sc) has 21 protons in its nucleus, which can be determined using its atomic number. To find the number of neutrons, we can subtract the atomic number from the atomic mass: Scandium has an atomic mass of approximately 45. This gives us 45 - 21 = 24 neutrons in a Scandium atom.
The atomic number for chromium is 24. To find the mass number, you sum the number of protons (atomic number) and neutrons. Since this isotope of chromium has 28 neutrons, the mass number would be 24 (protons) + 28 (neutrons) = 52.
Any isotope with 24 protons is chromium; therefore, the requested isotope is 54Cr.
number of neutrons = mass number - atomic number = 50 - 24 = 26
Number of protons + neutrons = mass number 26 protons + 31 neutrons 57
The isotope has 20 protons and 24 neutrons. This isotope is called calcium-44, and it is a stable isotope of calcium.
Isotope 24Na (or Na-24) has 11 protons and 13 neutrons, its mass number is 24Isotope 23Na is the stable form of Na with 11 protons, 12 neutrons and with mass number 23.
Assuming that the questioner intended to write "Cr" instead of "cr", the isotopes indicated are those of the element chromium, whose atomic symbol is "Cr" and whose atomic number is 24. The atomic number is defined as the number of protons in a nucleus of each atom, and the atomic mass number, which precedes the atomic symbol, is defined as the number of protons and neutrons combined. In order to maintain electrical neutrality as is required for any atom, the number of electrons must be the same as the number of protons. From the definition of mass number, it follows that the number of neutrons is equal to the atomic mass number minus the atomic number. Therefore, each isotope named in the question has 24 protons and 24 electrons, but the isotope with mass number 58 has 32 neutrons and the isotope with mass number 63 has 32 neutrons has 39 neutrons.
24. Atomic number is a reflection of the number of protons, which equals the number of electrons in an atom. The number of electrons would vary only if it were an ion, and the number of neutrons would vary only if it were an isotope.
A chromium-54 isotope has 28 neutrons in its nucleus. This is because chromium has an atomic number of 24, which represents the number of protons in the nucleus. Neutrons are calculated by subtracting the atomic number from the mass number.
The most common isotope of calcium (40Ca) has 20 neutrons. You can find this out by subtracting the number of protons (atomic number, 20), from the total AMU's of 40. About 96% of calcium on Earth is calcium-40. Calcium also has eight other isotopes, 41Ca through 48Ca, five of which are radioactive. The second-most prevalent stable isotope is 44Ca which is about 2% of all calcium.
An unknown element contains 24 protons, 21 electrons,and has mass number 54
A magnesium atom with a mass number of 24 has 12 protons because the atomic number of magnesium is 12. To find the number of neutrons, you subtract the atomic number from the mass number: 24 (mass number) - 12 (atomic number) = 12 neutrons.