Question

An element 'A' has 1 electron in the outermost shell or N-shell. Calculate
1. Atomic number of element A ,
2. Valence
3. Name of the element
4. Nature of element
5. Electronic Configuration
6. Electron Dot Structure​

Answer 1

Explanation:

Atomic number of element A is 19.

Valence is 1

The element is Potassium.

Nature of element is, it is metallic

Electronic configuration is 2,8,8,1