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.
The 3B group marks the beginning of the transition metal elements. The third row of the 3B group contains all of elements between element 57 (lanthanum) and element 71 (lutetium). These elements are grouped together and called the lanthanides.Similarly, the fourth row of group 3B contains the elements between elements 89 (actinium) and element 103 (lawrencium). These elements are known as the actinides.ll the lanthanide elements fill the 4f electron shell before the second 5d electron gets filled. Since all the lanthanides contain a 5d 1 electron, they belong in the 3B group. Similarly, the actinides contain a 6d 1 electron and fill the 5f shell before filling the 6d 2 electron. All actinides belong in the 3B group.