In the Modern (RBSESolutions.com) Periodic Table, calcium (Z = 20) is surrounded by the elements with atomic numbers 12, 19, 21, and 38 which of the following will have physical and chemical properties resembling calcium.
A. 12, 20, 38
B. 12,19, 20, 38
C. 19,20,38
D. 12,19, 20
Answer:A
In the Modern (RBSESolutions.com) Periodic Table, calcium (Z = 20) is surrounded by the elements with atomic numbers 12, 19, 21, and 38 which of the following will have physical and chemical properties resembling calcium.
A. 12, 20, 38 B. 12,19, 20, 38 C. 19,20,38 D. 12,19, 20