The mass of an atom and the equivalent of to the number of protons and neutrons in the atom
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Space exploration thus supports innovation and economic prosperity by stimulating advances in science and technology, as well as motivating the global scientific and technological workforce, thus enlarging the sphere of human economic activity.
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* Beryllium is the lightest of all the alkaline earth metals.
* It has higher melting and boiling points compared to other elements in group 2.
Explanation:
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A solid that has a high to very high melting point, great hardness, and poor electrical conduction is an : E. Ionic solid
Ionic solid consist of oppositely charge ions. One of the example of Ionic solid is salt (NaCl)
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