The mass of an object is 216 g and the volume is 24 ml. What is the density

Explanation:

The density of a substance can be found by using the formula

From the question we have

We have the final answer as

Hope this helps you

sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.