Question

what has the greatest atomic radius? ne mg ca fr what has the greatest ionic radius? ne mg ca fr what has the greatest ionization energy? ne mg ca fr what has the greatest electronegativity? ne mg ca fr

Explanation:

1. Atomic and Ionic Radius: Atomic and ionic radii increase down a group in the periodic table due to the addition of electron - shells. Francium (Fr) is in Group 1 and is the heaviest and lowest - placed among the given elements, so it has the largest atomic and ionic radius. Neon (Ne) is a noble gas with a stable electron configuration and a small radius. Magnesium (Mg) and calcium (Ca) are in Groups 2 and have smaller radii compared to Fr.
2. Ionization Energy: Ionization energy generally decreases down a group and increases across a period. Neon (Ne) has a full outer shell (octet) and is a noble gas, which requires a large amount of energy to remove an electron, so it has the highest ionization energy among the given elements. Francium (Fr) has a low ionization energy as it readily loses its outermost electron to achieve a stable configuration.
3. Electronegativity: Electronegativity decreases down a group. Neon (Ne) is a noble gas and does not readily form compounds, so it has a very low electronegativity. Among the metals, magnesium (Mg) and calcium (Ca) have low electronegativities, and francium (Fr) has the lowest electronegativity among them. Since none of these are highly electronegative elements, but considering the trends, none of these elements have high electronegativities, but in comparison, Mg might have a relatively higher electronegativity among them due to its position in the periodic table compared to Ca and Fr.

Answer:

1. What has the greatest Atomic Radius? Fr
2. What has the greatest Ionic Radius? Fr
3. What has the greatest Ionization Energy? Ne
4. What has the greatest Electronegativity? Mg