Group 1a element sodium combines with group 7a element chlorine to form sodium chloride or table salt. based on this information, this 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.

Liquid water turns into water vapor at which step in the water cycle? a. precipitation o b. water run off c. evaporation d. condensation

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers

Which of the characteristics of life does a virus display