cobalt has a mass number of 59 and an atomic number of 27. a student wants to create a model of a cobalt atom. which statement about the model is correct?
the model should show 32 protons and 59 neutrons
the model should show 59 protons and 27 neutrons
the model should show 27 protons and 32 neutrons
the model should show 27 protons and 27 neutrons
The correct statement is: "The model should show 27 protons and 32 neutrons."
in a molecule of lithium sulfide, there are two atoms of lithium and one atom of sulfur. which statement about lithium sulfide is correct?
A molecular model of lithium sulfide would have two spheres.
both lithium and sulfur form positive ions
the atoms in lithium sulfide are held together by bonds
the chemical formula for lithium sulfide is LiS^2
The correct statement is: "The atoms in lithium sulfide are held together by bonds."
The correct statement about the model of a cobalt atom is that it should show 27 protons and 32 neutrons.
To determine the correct statement about the model of a cobalt atom, we need to understand the composition of an atom based on its mass number and atomic number.
The atomic number of an element indicates the number of protons in the nucleus of its atom. In this case, cobalt has an atomic number of 27, which means it has 27 protons.
The mass number of an element is the sum of the number of protons and neutrons in the nucleus of its atom. Given that the mass number of cobalt is 59, we can subtract the atomic number from the mass number to find the number of neutrons. In this case, 59 - 27 = 32 neutrons.
Therefore, the correct statement about the model of a cobalt atom is:
"The model should show 27 protons and 32 neutrons."