| Element | Atomic Number (Z) | Atomic Radius (pm) |
|---|---|---|
| fluorine | 9 | 71 |
| chlorine | 17 | 99 |
| bromine | 35 | 114 |
| iodine | 53 | 133 |
Which group of elements 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.
Which has largest radius?
Since the atomic radius decreases in a period but increases down the group so Sr of group II and period V is largest in size.
Which of the following has largest atomic radius?
So Cesium has the largest atomic radius among the given elements.
Which element is most active in Group 17?
Fluorine (F) is the first element in the Halogen group (group 17) in the periodic table. Its atomic number is 9 and its atomic weight is 19, and it’s a gas at room temperature. It is the most electronegative element, given that it is the top element in the Halogen Group, and therefore is very reactive.
Which group has the smallest atomic radius?
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. Atomic radius decreases as you move across a period from left to right and decreases as you move up a group from bottom to top.
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 of the following has the smallest radius rb K+ K Rb+?
The trend of elemental radius increases from top to bottom and from right to left. This means Rb is greater than K. Incorporating the positive charges, K+ is smaller than K and Rb+ is smaller than Rb. Thus, the trend in increasing order is K+,K,Rb+,Rb.
Which has the largest radius Co3+ Mn3+ fe3+ Cr3+?
Fe 3+ has highest radii because by going left to right in the periodic table , the size get decreased so .. Fe 3+ >Co3+ >Cr3+ >Mn3+ .
Which has larger 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 has larger atomic radius K 19 or CA 20?
Answer. Answer: Potassium ( k ) – > atomic number 19 has larger atomic radii.
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 has larger radius S or CL?
Answer. Sulphur(S) has the largest atomic radius beaches on moving left to right in a period, Atomic Radius decreases.
What does Group 17 have in common?
Halogens are highly reactive nonmetal elements in group 17 of the periodic table. Halogens include solids, liquids, and gases at room temperature, and they vary in color. Halogens are among the most reactive of all elements.
What is the least reactive element in Group 17?
However, halogens readily combine with most elements and are never seen uncombined in nature. As a general rule, fluorine is the most reactive halogen and astatine is the least reactive.
Which element is the most active?
Fluorine is chemically the most active element, reacting with virtually every element. It even reacts with the noble gases at high temperatures and pressures.