Na has the largest atomic radius. Reason: Li : belongs to the 2nd period. Na and Cl : belong to the 3rd period.
Which element has the largest atomic radius sodium or aluminum?
Sodium has fewer electrons than aluminum and therefore a weaker inward pull on its electrons, which results in a bigger atomic radius.
Which one of the following has the largest atomic radius sodium potassium magnesium Aluminium?
Magnesium belongs to Period 3 and Group 2. Aluminium belongs to Period 3 and Group 13. Potassium belongs to Period 4 and Group 1. Thus, potassium has the largest atomic radii.
Which has the largest atomic radius magnesium or aluminum?
Magnesium has a larger atomic radius than Aluminum.
The atomic radius of elements decreases from left to right across a period.
What has a larger atomic radius magnesium or potassium?
As we can see, only Potassium has four electron shells, therefore Potassium has the largest atomic size. ... Interestingly enough, Sodium has a larger atomic radius then magnesium, despite having less electrons and protons.
Which element has lowest atomic radius?
Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.
Which one of the following has the smallest atomic radius?
Which element has the smallest atomic radius? Explanation: Helium has the smallest atomic radius.
Which cation has smallest radius?
So, in the end, we can conclude that nickel ions have a minimum radius. So, the correct answer is Option C. Note: While comparing the ionic radius, we should consider all the points.
Is magnesium larger than Aluminium?
Al has 13 protons and 3 electrons in the outermost energy level. On the other hand,Mg has 12 protons and 2 electrons in the outermost energy level. Therefore,attraction between the nucleus and the electrons of the outermost energy level of Al is greater than that of Mg. So, magnesium has the largest atomic size .
Why the atomic radius of Aluminium is smaller than magnesium?
Assertion: The first ionisation enthalpy of aluminium is lower than that of magnesium. <br> Reason : Ionic radius of aluminium is smaller than that of magnesium.
Which has a higher ionization energy magnesium or aluminum?
So the extra amount of protons means the nucleus holds the outer electrons more strongly so it requires more energy to remove an electron. Aluminium has a lower ionisation energy than Magnesium . This is unexpected as Al has more protons. This can be explained by electron configurations.
Does sodium have a larger atomic radius than oxygen?
Therefore, even though a sodium ion and an oxygen ion have the same number of electron shells and the same number of electrons, a sodium ion is smaller because it has a greater number of protons. Or in other words, an oxygen ion is larger because it has fewer protons.
Does potassium have a larger atomic radius?
As an example, potassium (K) has a larger average atomic radius (220 pm)than sodium (Na) does (180 pm). The potassium atom has an extra electron shell compared to the sodium atom, which means its valence electrons are further from the nucleus, giving potassium a larger atomic radius.
Which element has a larger radius than potassium?
Since potassium is located at the start of period 3, and bromine at the end of the same period, potassium will have a larger atomic radius than bromine, and thus the largest atomic radius of the four given atoms.
