1^st Group

Hydrogen

• Default: H⁺

• Molecules:

  • Neutral atoms: 1 bond is accepted
  • Charged atoms: Not allowed in molecules.
  • Radical: Not allowed in molecules.

• Ions: H⁺, H^-

• Radical:

  • H · is accepted
  • H without radical and charge or bond is not accepted.
    

Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Caesium (Cs), Francium (Fr)

• **Default: ** Li, Na, K, Rb, Cs, Fr respectively.

• Molecules:

  • Neutral atoms: 1 bond is accepted.
  • Charged atoms: Not allowed in molecules.
  • Radical: Not allowed in molecules.

• Ions: Li⁺, Na⁺, K⁺, Rb⁺, Cs⁺, Fr⁺ are accepted.

• Radical: ** Me **· is accepted