" The minimum atomic number of an element in which number of s-electron = number of "d" -electron "

The atomic number of an element X is 19. The number of electrons in its ion X^(+) will be

The atomic number of an element Y is 17. The number of electrons in its ion Y^(-) will be:

A neutral atom of an element has 2K,KL ,9M, and 2N electon .Find and the following a. Atomic number b. Total number of s electron c Total number of p electron d.Total number of d electron e.Velocity of the element f.Number of unpaired electrons

The atomic number of an element is 16. Predict the number of valence electrons in its atom

The atomic number of an element is 5 and mass number is 11. Find the number of electrons, protons and neutrons present in an atom of it. How can this element be represented ?

The atomic number of an element is 86 . The number of electrons present in the outer most orbit and the number of orbits are