Answer:
A
Explanation:
Converting thermal energy into electrical energy
20.
Atomic number is equivalent to its protons and electrons. :)
<span>6s²4f¹⁴5d¹⁰6p²
6 shows that the element is in the 6 period,
6p² shows that the element is in the 14th group. (1 and 2 groups have s -electrons as last ones, 13 group has s²p¹, and 14 group has s²p²)
The element is Pb.
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Physical because you can see it evaporate have a great día
