Effective Nuclear Charge (Zeff) And Atomic Radius (Page 2 of 2) in pdf

Effective Nuclear Charge (Zeff) And Atomic Radius Page 2

6. Write electron configurations for the transition metals Sc (atomic # 21) and Ti (atomic #22). Calculate Z

for

eff

these two transition metals.

7. The atomic radii of transition metals do not decrease significantly across a row. As you add electrons to the

d-orbital are you adding core electrons or valence electrons?

8. Does Z

increase, decrease or stay the same for transition metals in a row?

eff

9. Contrast the radius trend for transition metals across a row with that of the main group elements across a

row.

Informal Writing Task – Answer the following questions using grammatically correct English sentences.

A) Explain the physical reasons for the trends in atomic radii down a column in the periodic table.

B) Considering the trend of Z

(effective nuclear charge) explain the trend of atomic radius across a period

eff

in terms of effective nuclear charge and Coulombic attraction (positive is attracted to negative).

Created by Emily Heider

Effective Nuclear Charge (Zeff) And Atomic Radius Page 2