What are the first 20 elements
- Hydrogen (H)
- Helium (He)
- Lithium (Li)
- Beryllium (Be)
- Boron (B)
- Carbon (C)
- Nitrogen (N)
- Oxygen (O)
- Fluorine (F)
- Neon (Ne)
- Sodium (Na)
- Magnesium (Mg)
- Aluminum (Al)
- Silicon (Si)
- Phosphorus (P)
- Sulfur (S)
- Chlorine (Cl)
- Argon (Ar)
- Potassium (K)
- Calcium (Ca)
Mnemonic devices for first 20 elements
- Happy Henry Lives Beside Boron Cottage, Near Our Friend Nelly Nancy MgAllen. Silly Patrick Stays Close. Arthur Kisses Carrie.
- Here He Lies Beneath Bed Clothes, Nothing On, Feeling Nervous, Naughty Margret Always Sighs, ” Please Stop Clowning Around ” (18 elements)
- How He Likes Bear By Cups Not Overflowing. Although Science Presents Some Clues, Are Kittens Cats?
- Harry He Likes Beer Bottle Cold, Not Over Frothy. Nelly’s Nanny Might, Although Silly Person, She Climbs Around Kinky Caves;
- He Has Light Brain But Can Not Offer Full Nine Subjects, May All Senior Professional Scientists Come And Protect Chemistry
- He Has Large Brain But Can Not Offer Full Nine Subjects, Master Art Students Prefer Simple Colours And Pretty Colours
- “H.HeLi, B.BCNOF and NeNa MgAl SiPS ClArKCa”
- “Hi Helen, Listen B.B.C. News On Friday N(e)ight. Naughty Maggie Always Sings Pop Songs. Clever Archie Kissed Cathy.”