Mnemonics
Z=1–20 elements (s and p blocks)
Symbols of elements: H, He, Li, Be, B, C
Mnemonic: Hi! Henry's Little Brother is Bold and Calm.
Symbols of elements: N, O, F, Ne
Mnemonic: Nothing to Feel Nervous.
Symbols of elements: Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca
Mnemonic: It is Naughty Magpie who Always Sings Parody Songs Clearly, After Killing Cats.
Z=21–30 (d–block 1st series)
Symbols of elements: Scandium Titanium Vanadium Chromium Manganese Ferrum Cobalt Nickel Copper Zinc.
Mnemonic: Saint Thomas Very Carefully Made Five Complete New Copies of Zinc plates.
Z=90–103 (f–block Actinides)
Symbols of elements: Ac, Th , Pa, U Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No, Lr.
Mnemonic: Alchemi Theories Passionate on Unusual New Products, while Able Chemists Believe in Careful Experiments to Find More New Lawyers.