K has two shells (n=4 vs n=2) more than Li, so it would be much larger. the electronic structure of atoms: principle quantum number, effective nuclear charge, etc.) C will have the slightly larger radius because it has one less proton and thus, a lower effective nuclear charge.
Why does K have a larger atomic radius than Li?
Sodium has an atomic number of 11. These electrons can also be accommodated in 3shells but there is only 1electron in the outermost shell. … Because of the large atomic sells of Potassium, it’s atomic radius is Much larger than that of Sodium or Lithium.
Does Li or be have a larger atomic radius?
The effective nuclear charge is simply a measure of the net positive charge that affects the outermost electrons in an atom. … That is why lithium has a larger atomic radius than beryllium. In fact, atomic radius decreases as you move from left to right across a period.
Which atom has the largest 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.
Does K or K+ have a larger atomic radius?
The K+ ion has its outermost electrons on the third energy level now and is size is smaller than that of K ion. Hence, K is larger than K+.
Which is larger Li or K?
We measure the distance BETWEEN two atoms and from that infer a radius. Which would you expect to have the larger atomic radius: Li or K? K has two shells (n=4 vs n=2) more than Li, so it would be much larger.
Which is larger C or N?
The attraction of the nucleus for the valence electrons increases. Hence, the atomic size decreases. The atomic size of C is larger than that of N.
Which is larger F or Li+?
In your case, lithium has an atomic number equal to 3 and fluorine an atomic number equal to 9 . So fluorine has more protons in its nucleus. … As a result, the atomic size of fluorine will be smaller than that of lithium, or, in other words, lithium will have larger atomic radius than fluorine.
Which has largest radius?
Na has the largest atomic radius. Reason: Li : belongs to the 2nd period. Na and Cl : belong to the 3rd period.
Which is smaller in size Li or F?
Fluorine is in the same period as lithium but to the right of lithium so it’s smaller which means Li is larger in size than F.
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.
What element has the second largest atomic radius?
(A) Trends in the Atomic Radius of Elements in Period 2
| Element | Li | Be |
|---|---|---|
| Energy Level being filled (Valence Shell) | second (L) | second (L) |
| Nuclear Charge (charge on all protons) | 3+ | 4+ |
| Atomic Radius (pm) | 134 | 90 |
| General Trend | (largest) | → |
Which has the largest atomic radius carbon or oxygen?
Atomic Radius of the elements
| Helium | 31 pm | 161 pm |
|---|---|---|
| Oxygen | 48 pm | 167 pm |
| Hydrogen | 53 pm | 169 pm |
| Nitrogen | 56 pm | 171 pm |
| Carbon | 67 pm | 171 pm |
Is K+ bigger 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 Br or Br bigger?
Br – will have the largest atomic size because Br- has one extra electron in its valence shell which due to its unbalanced negative charge will be repelled and hence the atomic radius of Br- will increase.
Why is K+ much more stable than k2+?
Answer. Answer: Atomic number of k = 19, … We see that, Pottasium(k) has 1 electron in it’s outermost shell, So k+ will have, 8 outermost electrons, According to Octet rule, K+ will be more stable !.