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
3 answers
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
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."