Final answer:
The element with the electron configuration ending in 5s²4d´ is Zirconium (Zr), which is found in the 5th period and the d-block of the periodic table.
Step-by-step explanation:
The element represented by the electron configuration that ends with 5s24d4 can be identified by looking at the periodic table and finding the corresponding position of the elements. This configuration indicates that the element is in the 5th period and the d-block of the periodic table.
Specifically, after filling the 5s orbital, the 4d orbitals begin to fill. The notation indicates that there are four electrons in the 4d orbital. According to the aufbau principle, elements fill their orbitals starting with the lowest energy levels progressing to higher levels. With this in mind, the element with the given configuration is Zirconium (Zr), which has an atomic number of 40.