which is true of transition metals when moving from left to right on the periodic table? the d sublevels are…

which is true of transition metals when moving from left to right on the periodic table? the d sublevels are not filled across the period. the cation radii become larger across the period. atomic radii increase slightly and then start to decrease. atomic radii decrease slightly and then start to increase.

which is true of transition metals when moving from left to right on the periodic table? the d sublevels are not filled across the period. the cation radii become larger across the period. atomic radii increase slightly and then start to decrease. atomic radii decrease slightly and then start to increase.

Answer

Brief Explanations:

As we move from left - right across a period of transition metals, electrons are added to the d - subshell. The effective nuclear charge increases initially, causing a slight decrease in atomic radius. But as electron - electron repulsions start to play a role with more electrons in the d - subshell, the atomic radius starts to increase. The d - subshells are filled across the period. Cation radii decrease across the period due to increased effective nuclear charge.

Answer:

Atomic radii decrease slightly and then start to increase.