Using electronegativity values and types of elements, identify the type of chemical bonding present in each substance below and metallic, ionic, or covalent

Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)

Si una estrella no tiene paralaje medible, ¿qué puedes inferir?

Identify a strong intermolecular force of attraction between an alcohol