Marijuana use during pregnancy is linked to increased risk of both brain and behavioral problems in babies. If a pregnant woman uses marijuana, the drug may affect certain developing parts of the fetusâs brain. Resulting challenges for the child may include problems with attention, memory, and problem-solving.
Answered by The WikiAnswersÂ® Community. Making the world better, one answer at a time. The third element on the Periodic Table of the Elements is Lithium (Li), which has an atomic number of 3. The third element on the Periodic Table of the Elements is Lithium (Li), which has an atomic number of 3.
Actinium is the third element in Row 7 of the periodic table, a chart that shows how the chemical elements are related to each other. Some chemists place it in Group 3 (IIIB), with scandium and yttrium. Other chemists call it the first member of the actinides.