D AND F BLOCK

Question 1

BRASS

Answer 1

ALLOY-COPPER, ZINC

Question 2

GERMAN SILVER

Answer 2

ALLOY-Cu,Zn and Ni

Question 2

BRONZE?

Answer 2

ALLOY-COPPER,TIN

Question 3

Screening Effect

Answer 3

(toxic BF)
involves calculating the screening constant (S)
Inner electrons block outer ones

Question 4

Effective Nuclear Charge

Answer 4

(healthy BF)
Zeff= Z-S
where, 𝑍 is the atomic number and 𝑆 is the screening constant.