A portion of the periodic table of elements is reproduced here. Based on their relative positions, what conclusion can be drawn about these metallic elements?
20
25
K
Ca
Sc
Ti
V
Cr
Mn
Fe
anganese
Iron
Potassium
39.09
Calcium
40.00
Scandium
44.96
Titanium
47.87
Vanadium
50.94
Chromium
51.99
54.94
55.85
O Chromium is twice as reactive as vanadium.
O Potassium is much more reactive than iron.
O Calcium is much less reactive than scandium.
O All the elements have the same reactivity.