Final answer:
The ion formed by 1H1 is a hydrogen cation (H+), which in aqueous solutions often appears as the hydronium ion (H3O+). This is because hydrogen, a group 1 element, loses one electron to form a 1+ ion.
Step-by-step explanation:
The ion formed by hydrogen (1H1) when it loses an electron is a hydrogen cation (H+). This cation is often associated with water molecules forming a hydronium ion (H3O+) in aqueous solutions. This process is a simplification of the acid ionization such as HC1 (g) → H+ (aq) + Cl‰ (aq). Hydrogen, being in group 1 of the periodic table, naturally forms a 1+ ion, indicative of it losing one electron from its sole s orbital.
Group 1 elements' ability to form 1+ ions is due to their single valence electron, which is easily lost, leading to a positive charge. This is predicted by the position of hydrogen in the periodic table, emphasizing the usefulness of the table in predicting ion charges and formation. Other elements form ions in a similar way, by either losing electrons to form cations or gaining electrons to form anions.