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 correct answer in this question is option B. The electronegativity increases across a group. Chlorine ion has a higher electronegativity than the sodium ion. Chlorine need one electron to have a noble gas configuration that is why it gets one electron every chance it makes.

Answerit curves up and levels out.explanationwe assume that the container contains absolutely no ammonia to begin with as it states that "nitrogen gas and hydrogen gas" react to "produce ammonia."at dynamic equilibrium, the product and reactant concentrations are equal.this means that, starting from a concentration of zero, [nh₃] must curve "up" from zero and then level out to a constant concentration.