Question

Explain why magnesium is harder than sodium based on the sea electron model

Answer 1

Respuesta:

Magnesium has the outer electronic structure 3s2. Both of these electrons become delocalised, so the "sea" has twice the electron density as it does in sodium. ... Each magnesium atom also has twelve near neighbours rather than sodium's eight. Both of these factors increase the strength of the bond still further

Answer 2

Respuesta:

la verdad no lo se lo siento