Group 1a element sodium combines with group 7a element chlorine to form sodium chloride or table salt. based on this information, which expression is true about the electronegativity values of these two elements?
a) na > ci
b) na < ci
c) na = ci
d) we cannot make a prediction with data provided.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.