regularities in the periodic system
7. grade
|
regularities in the periodic system 7. grade |
|
|
valency to hydrogen
Problem 6. 1. Find the regularities with hydrogen valence H according to groups.
|
Problem 6. 2. Find a regularity:
а) 1; 3; 5; 1; 3; 5; 1; 3; 5 б) 2; 4; 6; 2; 4; 6; 2; 4; 6 в) 2; 4; 6; 4; 2; 2; 4; 6; 4; 2
г) 1; 2; 4; 8; 4; 2; 1; 2; 4; 8; 4; 2 д) 1; 2; 3; 4; 3; 2; 1; 1; 2; 3; 4; 3; 2 е) 1; 2; 3; 4; 5; 6; 7; 8; 1; 2; 3; 4; 5; 6; 7; 8; 1; 2; ...