The "3D series" refers to the transition metals in the d-block of the periodic table, specifically from scandium (Sc) to zinc (Zn). Here are some common mnemonics to help remember the order of the elements in this series:
ScHooTZ PaVIa: This mnemonic uses the first two letters of each element—Scandium (Sc), Titanium (Ti), Vanadium (V), Chromium (Cr), Manganese (Mn), Iron (Fe), Cobalt (Co), Nickel (Ni), Copper (Cu), and Zinc (Zn).
So Tiny Very Cute, Man Feels Cold, Never CuZn: This mnemonic combines elements with short phrases: Scandium (Sc), Titanium (Ti), Vanadium (V), Chromium (Cr), Manganese (Mn), Iron (Fe), Cobalt (Co), Nickel (Ni), Copper (Cu), and Zinc (Zn).
Sunny Tigers Vanished, Craving More Ice Cream Now, Cold, Zebra: This mnemonic uses a sentence to remember the elements: Scandium (Sc), Titanium (Ti), Vanadium (V), Chromium (Cr), Manganese (Mn), Iron (Fe), Cobalt (Co), Nickel (Ni), Copper (Cu), and Zinc (Zn).
These mnemonics can be helpful for memorizing the order of the elements in the 3D series of the periodic table. However, it's always good to review and practice to reinforce your understanding of the periodic table.