Nucleon Number (Another Name For Mass Number)

Carbon-12 and Carbon-14 are isotopes. Isotopes are atoms of the same element that have different numbers of neutrons in their nucleus. Carbon-12 has 6 protons and 6 neutrons, while Carbon-14 has 6 protons and 8 neutrons. The difference in the number of neutrons gives these isotopes different atomic masses. Isotopes of an element have similar chemical properties but may have different physical properties, such as radioactive decay.

The number of neutrons in an atom can be calculated by subtracting the proton number from the nucleon number. In this case, the nucleon number is 16 and the proton number is 8. Subtracting 8 from 16 gives us 8, which is the number of neutrons in the oxygen atom.

Hydrogen, deuterium, and tritium are all isotopes of hydrogen, meaning they have the same number of protons (which is 1, since they are all hydrogen atoms). However, they differ in the number of neutrons they have. Neutrons are subatomic particles with no charge, and each isotope of hydrogen has a different number of neutrons. Therefore, the correct answer is neutrons.

The nucleon number represents the total number of protons and neutrons in an atom's nucleus. Since the nucleon numbers for elements P and S are different, it means they have different numbers of protons and neutrons. Therefore, the correct answer is the number of neutrons, as it is the only option that remains the same for both elements.

Element X has a nucleon number of 40 and a proton number of 20. The nucleon number represents the total number of protons and neutrons in the nucleus of an atom. Since the proton number of X is 20, it means that X has 20 protons. The periodic table is arranged in order of increasing proton number, so X with 20 protons would be found in Period 2, where elements with proton numbers ranging from 3 to 20 are located.

The correct answer is "Isotopes are elements that have the same number of protons and different number of neutrons." This sentence is correct because isotopes are defined as elements that have the same number of protons (which determines the atomic number and the identity of the element) but different numbers of neutrons (which determines the atomic mass and the isotopic variant of the element).

Neutrons will not bend or deviate when fired through an electric field because they have no charge. Protons and electrons, on the other hand, have positive and negative charges respectively, and will experience forces in the electric field that cause them to bend or deviate.

Deuterium is an isotope of hydrogen that has one neutron in its nucleus. Since the question asks for the number of neutrons in deuterium, the correct answer is 1.

Vanadium, with a nucleon number of 51 and a proton number of 23, has 23 electrons. The nucleon number represents the total number of protons and neutrons in an atom's nucleus, while the proton number represents the number of protons. Since electrons have a negative charge and protons have a positive charge, an atom is electrically neutral, meaning it has an equal number of protons and electrons. Therefore, Vanadium has 23 electrons. The number 79 is not relevant to the question and does not represent the number of electrons in Vanadium.

The isotope of Oxygen with a nucleon number of 16 and a proton number of 8 has 8 electrons. However, the question asks for the number of electrons an isotope of Oxygen with these specific numbers has, which is 10.