Question

For each of the following, give the name of an element from Period 2 (lithium to neon), referring to the Periodic Table given on last page. which matches the description. Elements may be used once, more than once or not at all. (i) an element which is gaseous at room temperature and pressure

Answer 1

The elements of period 2 that satisfy the descriptions are;

a) Neon

b) carbon

c) sodium

d) sodium

We are aware that the elements are arranged in the periodic table according to their degree of reactivity. We are aware that the elements we currently possess are organized into groups and eras.

While elements belonging to the same period have the same number of shells, elements in the same group do have similar chemical properties. Throughout a period, the characteristics of the elements often alter.

Missing parts;

For each of the following questions give the name of an element from period 2 lithium to neon which matches the description elements may be used once more than once or not at all

a) an element which has atoms with a full outer shell of electrons

b) an element which exists as both diamond and graphite

c) an element that reacts vigorously with cold water

d) a soft metallic element which is stored in oil