Answer. Answer: Potassium (K) with an atomic number of 19 has the largest atomic radius.
Which of the following elements has the largest atomic radius Na Mg K Ca?
The element potassium (K) present in group 1 has the largest atomic radius.
Which element has the largest atomic radius K or Na?
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 has largest radius mg or CA?
1 Expert Answer
Calcium has a larger atomic radius than Magnesium. If you look on the period table you will notice Magnesium atomic number is 12, while Calcium is 20. Calcium(Ca) has 4 energy level while magnesium(Mg) has 3 Energy level.
Which of the following atoms has the largest atomic radius?
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 has larger atomic radius K 19 or CA 20?
Answer. Answer: Potassium ( k ) – > atomic number 19 has larger atomic radii.
Which among the following has the largest radius?
Thus O2− has a minimum z-effective thus largest radius.
Which is bigger Na or Na+?
Yes Na+ is smaller than Na because Na+ is formed when an electron is lost from the Na atom,Thus the effective nuclear charge increases bcz the number of protons exceeds the number of electrons . This results in bringing the valence shell a little closer to the nucleus because of a very strong nuclear pull.
What has the smallest atomic radius?
Explanation: Helium has the smallest atomic radius. This is due to trends in the periodic table, and the effective nuclear charge that holds the valence electrons close to the nucleus.
Why is atomic radius of K greater than Br?
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.
Is CA bigger than MG?
Ca atom will be larger than Ca2+ because cations are smaller than their parent atom. The Ca2+ cation is larger than the Mg2+ cation since the calcium cation has one more complete level than the magnesium cation.
How do you find atomic radius?
Atomic radius is determined as the distance between the nuclei of two identical atoms bonded together. The atomic radius of atoms generally decreases from left to right across a period. The atomic radius of atoms generally increases from top to bottom within a group.
Which ion has the largest radius?
1 Answer. Ernest Z. K+ has the largest radius.
What is carbon’s atomic radius?
170 pm
What is the atomic radius of germanium?
211 pm
What is the atomic radius of Na?
227 pm