what element does this pes represent? photoelectron spectrum relative number of electrons binding energy…

what element does this pes represent? photoelectron spectrum relative number of electrons binding energy (kj)/mol enter the answer choice letter. a. k b. ca c. cr d. mo

what element does this pes represent? photoelectron spectrum relative number of electrons binding energy (kj)/mol enter the answer choice letter. a. k b. ca c. cr d. mo

Answer

Answer:

B. Ca

Explanation:

Step1: Analyze electron - count from PES

The sum of the relative number of electrons from the peaks gives the total number of electrons. Summing the values: (1 + 2+ 6+2 + 6+2=19 + 1=20).

Step2: Identify element by electron - count

The atomic number of an element is equal to the number of electrons in a neutral atom. Calcium (Ca) has an atomic number of 20. Potassium (K) has 19 electrons, Chromium (Cr) has 24 electrons and Molybdenum (Mo) has 42 electrons. So the element is Ca.