Question

Определите число протонов, электронов и нейтронов в атомах элементов : натрия, фосфора, золота

Answer 1

Na:  p=11  e=11   n=23-11=12
P:   p=15  e=15   n=31-15 =16
Au:  p=79   e=79   n=197 - 79 = 118

Answer 2

Number of Protons, Electrons, and Neutrons in Sodium (Na)

Sodium (Na) has an atomic number of 11, which means it has 11 protons in its nucleus. Since atoms are electrically neutral, the number of electrons in an atom is also 11. To find the number of neutrons, we subtract the atomic number from the atomic mass. The atomic mass of sodium is approximately 23, so the number of neutrons is 23 - 11 = 12.

Therefore, the number of protons, electrons, and neutrons in a sodium atom is: - Protons: 11 - Electrons: 11 - Neutrons: 12

Number of Protons, Electrons, and Neutrons in Phosphorus (P)

Phosphorus (P) has an atomic number of 15, which means it has 15 protons in its nucleus. The number of electrons in a neutral atom is also 15. To find the number of neutrons, we subtract the atomic number from the atomic mass. The atomic mass of phosphorus is approximately 31, so the number of neutrons is 31 - 15 = 16.

Therefore, the number of protons, electrons, and neutrons in a phosphorus atom is: - Protons: 15 - Electrons: 15 - Neutrons: 16

Number of Protons, Electrons, and Neutrons in Gold (Au)

Gold (Au) has an atomic number of 79, which means it has 79 protons in its nucleus. The number of electrons in a neutral atom is also 79. To find the number of neutrons, we subtract the atomic number from the atomic mass. The atomic mass of gold is approximately 197, so the number of neutrons is 197 - 79 = 118.

Therefore, the number of protons, electrons, and neutrons in a gold atom is: - Protons: 79 - Electrons: 79 - Neutrons: 118

Please note that the atomic masses mentioned here are approximate values and may vary slightly depending on the source.