Question

1. as the non - metallic properties of atoms increase, the electronegativity will _i_, and as the molar mass of atoms in the same group increase, electronegativity will _ii_.

the statement above is best completed by the information in row
row i ii
□ decrease decrease
□ decrease increase
□ increase increase
□ increase decrease

Explanation:

Step1: Relationship between non - metallic properties and electronegativity

Non - metallic properties of an atom are related to its ability to attract electrons. As non - metallic properties increase, the atom's ability to attract electrons (electronegativity) increases.

Step2: Relationship between molar mass (atomic size in a group) and electronegativity

In a group of the periodic table, as the molar mass (which is related to atomic size, as molar mass increases, atomic size generally increases) of atoms increases, the distance between the nucleus and the outermost electrons increases. The effective nuclear charge acting on the outermost electrons decreases. So, the atom's ability to attract electrons (electronegativity) decreases.

Answer:

increase, decrease (the last row in the table)