Question

question 9. which of the following symbols does not match the element name given? c, carbon. ge, germanium. cs, cesium. mg, manganese.

Explanation:

The chemical symbol for magnesium is Mg, while the chemical symbol for manganese is Mn. So the symbol - element pair "Mg, manganese" is incorrect. The other pairs (C - carbon, Ge - germanium, Cs - cesium) are correct according to the standard chemical symbols in the periodic table.

Answer:

Mg, manganese