1. What is the atomic number of Zirconium?

2. Assuming each of the ions in this spectrum has a chargeof +1, according to this mass spectrum, what is the mass in Daltonsof the most abundant isotope of zirconium?

3. Assuming each of the ions in this spectrum has a chargeof +1, according to this mass spectrum, how many neutrons does theleast abundant, stable isotope of zirconium have?

4. The most common ion of zirconium has a +4 charge. Howmany electrons does it contain