Each element in Period 3 has its valence electrons in the same electron shell, however, moving from left to right across period 3, each element has one more electron and one more proton than the element before it. As a result, explain what happens to the atomic radius as we go from left to right across period 3.

Sorry i dont understand the question can you rephase it?

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.

What are the options? physical property can be color, smell, opacity, viscosity, density, infra red spectrum, melting and boiling points, attraction and repulson to magnets, etc.