How is an element represented in Chemistry?

Genus represents.

Atoms of two different elements are represented in the following diagram. Indentify elements A and B.

Atoms of two different elements are represented in the following diagram. Do these elements belong to the same group ? Justify your answer.

How can a vector be represented?

How is magnetic flux represented if the magnet field is uniform?

How is magnetic flux represented if the magnet field is non-uniform?

Symbol represents

How is Lenz's Law represented mathematically?