The chemical reactivity of an element can be best shown by its reactions with ____ and _______
A. nitrogen, sulphur
B. nitrogen, oxygen
C. oxygen, halogens
D. nitrogen, halogens
Answer:C
The chemical reactivity of an element can be best shown by its reactions with ____ and _______
A. nitrogen, sulphur B. nitrogen, oxygen C. oxygen, halogens D. nitrogen, halogens