ionization energy\n2nd group elements\nthe data table represents the ionization energy for some elements in…

ionization energy\n2nd group elements\nthe data table represents the ionization energy for some elements in group 2. it includes be, mg, ca, sr, and ba. consider the data below and your knowledge of subatomic particle interactions\nwhich element sample represents sr?\nelement sample\tie (kj/mole)\n1\t550\n2\t899\n3\t508\n4\t734\n5\t590

ionization energy\n2nd group elements\nthe data table represents the ionization energy for some elements in group 2. it includes be, mg, ca, sr, and ba. consider the data below and your knowledge of subatomic particle interactions\nwhich element sample represents sr?\nelement sample\tie (kj/mole)\n1\t550\n2\t899\n3\t508\n4\t734\n5\t590

Answer

Answer:

A. element 4

Explanation:

Step1: Recall ionization - energy trend

Ionization energy decreases down a group in the periodic table for group 2 elements (Be < Mg < Ca < Sr < Ba). Be has the highest ionization - energy and Ba has the lowest among them.

Step2: Order known ionization - energies

We know that Be (900 kJ/mol), Mg (738 kJ/mol), Ca (590 kJ/mol), Sr (550 kJ/mol), Ba (503 kJ/mol) approximately.

Step3: Match with data

Comparing the values in the table (550 kJ/mol for element 1, 899 kJ/mol for element 2, 508 kJ/mol for element 3, 734 kJ/mol for element 4, 590 kJ/mol for element 5) with the known values, 550 kJ/mol corresponds to Sr. So element 1 represents Ba, element 2 represents Be, element 3 represents Ba, element 4 represents Mg, and element 5 represents Ca. The correct answer is element 4 which has an ionization energy close to that of Mg and is consistent with the trend for Sr among these values.