ndicate which species in each pair has the higher ionization energy.
Choose at least one answer.
a. Between K and I, I
b. Between K and I, K
c. Between Al and Al+, Al
d. Between Al and Al+, Al+
e. Between Ar and Cl-, Ar
f. Between Ar and Cl-, Cl-
g. Between Mg and Ca, Mg
h. Between Mg and Ca, Ca
I got a,c,e,f,g but i only got .25/1 right. I thought I got this because all you have to do is follow what the periodic table pattern says, but I keep getting it wrong so any help is appreciated!
No, you are missing the point on some.
there are four pair, and you have a five answers?
To determine which species in each pair has the higher ionization energy, you need to consider the following factors:
1. Atomic Size: Generally, smaller atoms have higher ionization energies than larger atoms because the electrons are closer to the nucleus, making them harder to remove.
2. Effective Nuclear Charge: The greater the positive charge of the nucleus and the stronger the attraction between the electrons and the nucleus, the higher the ionization energy.
3. Electron Configuration: The stability of a filled or half-filled electron shell can contribute to variations in ionization energy.
Let's go through each pair and analyze them:
a. Between K and I:
Potassium (K) is a metal located in period 4, while Iodine (I) is a non-metal in period 5. Since K is smaller than I, K has a higher ionization energy. Therefore, the correct answer is (b) between K and I, K.
b. Between Al and Al+:
Aluminum (Al) is a metal in period 3, while Al+ is an Al ion with one fewer electron. Removing an electron decreases the electron-electron repulsion, resulting in a lower ionization energy for Al+. Therefore, the correct answer is (d) between Al and Al+, Al+.
c. Between Ar and Cl-:
Argon (Ar) is a noble gas located in period 3, while Chlorine (Cl-) is a negatively charged ion. Noble gases have completely filled electron shells, making them very stable. Cl- has an extra electron, which increases electron-electron repulsion, causing it to have a higher ionization energy than Ar. Therefore, the correct answer is (e) between Ar and Cl-, Ar.
d. Between Mg and Ca:
Magnesium (Mg) and Calcium (Ca) are both metals in period 3. However, Ca has more protons in its nucleus compared to Mg, resulting in a greater effective nuclear charge. Therefore, the correct answer is (h) between Mg and Ca, Ca.
Based on the analysis provided, the correct answers are: b. Between K and I, K; d. Between Al and Al+, Al+; e. Between Ar and Cl-, Ar; and h. Between Mg and Ca, Ca.