Question

which statement about periodic table is correct? A: elements are arranged in order of increasing nucleon number B: elements change from non mettalic to mettalic across a period C: elements in the same period have have similar properties D: elements on the left of the periodic table form basic oxides

Answer 1

Answer:

Metallic Character and Periodic Table Trends. ... Metallic character decreases as you move across a period in the periodic table from left to right. This occurs as atoms more readily accept electrons to fill a valence shell than lose them to remove the unfilled shell