Marcus knows that sodium (Na) is found in Group 1, Period 3 on the periodic table. Where should he look to find another element that has similar properties to those of sodium?
Marcus should look in Group 1, Period 3 on the periodic table, as elements in the same group tend to have similar chemical properties. Elements in Group 1 are known as alkali metals and tend to be highly reactive and have similar properties, so he may find an element with properties similar to sodium in this group.
