Based on their positions in the periodic table, which two elements would most readily combine to make a stable compound? a. hydrogen (h) and lithium (li) b. sodium (na) and magnesium (mg) c. helium (he) and neon (ne) d. sodium (na) and chlorine (cl)

Option (D) is the correct answer.

Explanation:

For two elements to be stable in nature, there must be need of an element to gain an electron and there must be need of another combining atom to lose an electron.

In case of hydrogen and lithium, hydrogen has only one electron whereas lithium has 3 electrons. When both of them chemically combine together then they will form LiH.

In case of sodium and magnesium, both of then are metals and therefore, both of then need to lose electrons in order to gain stability. Hence, there will be no formation of bond between them.

In case of helium and neon, both of them have completely filled octet. So, they neither need to gain or lose an electron because they are already present in their stable state. Hence, they do not combine with each other.

In case of sodium and chlorine, sodium has one valence electron and chlorine has 7 valence electrons. So, in order to attain stability sodium will transfer its one electron to the chlorine atom.

As a result, there will be formation of ionic bond will take place. Also, when we move down the group there will be decrease in ionization energy of the metals.

Hence, sodium will lose an electron more easily than lithium.

Thus, we can conclude that sodium (Na) and chlorine (Cl) lements would most readily combine to make a stable compound.

the term hydride is commonly named after binary compounds that hydrogen forms with other elements of the periodic table. hydride compounds in general form with almost any element, except a few noble gases. the trends and properties vary according to the type of intermolecular force that bonds the elements together, the temperature, its molecular masses, and other components. hydrides are classified into three major groups, depending on what elements the hydrogen bonds to. the three major groups are covalent, ionic, and metallic hydrides. formally, hydride is known as the negative ion of a hydrogen, h-, also called a hydride ion. because of this negative charge, hydrides have reducing, or basic properties. its special characteristics will be further discussed.

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