Identify an ionic bond. identify an ionic bond. neutrons are lost. protons are pooled. electrons are transferred. protons are shared. electrons are gained.

 
            Electrons are transferred.

Explanation:
                   Ionic Bond is formed between Cation and an Anion. The formation of Cation takes place when an atom ( mainly Metal) looses electron(s). While an Anion ois formed when an atom ( mainly Non-Metal) accepts or gain electron(s).

Example:
                     Na   +   Cl     →     Na⁺   +   Cl⁻     →    NaCl

In Above reaction the valence electron of Sodium (2s¹→2s⁰ + e⁻) is transferred to the Valence Shell of Chlorine (3p⁵ + e⁻ →3p⁶) resulting in the formation of Na⁺ and Cl⁻.

29.1-12=17.1the answer is this one

Butterfly wingspan is 7.7