Question

(a) Fill in the blanks and rewrite the completed statements: 

(i) ________ group in the periodic table contains elements that are all gases at room temperature. 

(ii) Very fine particles mainly scatter ______ light.

Answer 1

(a) Fill in the blanks and rewrite the completed statements: 

(i) The 18th group in the periodic table contains elements that are all gases at room temperature. 

(ii) Very fine particles mainly scatter blue light.