Explanation: From top to bottom of the periodic table ions will increase in radii. However, now left to right the radius is more of a function of the number of electrons. … Similarly, O2- will be larger than F- as both have 10 electrons but Z=8 for oxygen and Z=9 for fluorine.
Does F or F have a larger radius?
F has a larger radius than F− because an additional electron causes greater repulsion in F.
Which is bigger F or F?
The atom which has higher magnitude of negative number on it is smaller in size… Here, F has 0 negative charge on it while F- has -1 negative charge on it…. So F will be bigger in size than F-….
What is the radius of O2?
152 пм
What is the radius of F?
147 пм
Is O2 bigger than F?
Explanation: From top to bottom of the periodic table ions will increase in radii. However, now left to right the radius is more of a function of the number of electrons. … Similarly, O2- will be larger than F- as both have 10 electrons but Z=8 for oxygen and Z=9 for fluorine.
Which is larger Na+ or F?
Na+ has smaller size than F- because both Na+ and F- have equal number of electrons i.e.10 . After losing an electron Na will have less electron cloud and more effective nuclear charge whereas F after gaining an electron will have less effective nuclear charge than the parent atom so the size increases .
Why 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 O bigger than O2?
O2− is larger than O because O is neutral but O2− has a charge 2−. O2− is larger than O because the decrease in electron repulsions that accompany addition of an electron causes the electron cloud to expand.
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 is larger in radius K+ or K?
These are electrons with “highest energy level”. When at neutral, the potassium ion in the form of K has an electronic configuration of: … 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 the correct order of size of O2 F and F?
The correct option is B (O2−>O−>F−>F). Note: Anions are formed by adding an additional electron to the neutral atom and cations are formed by removing an electron from the parent neutral atom. Anions carry negative charge and cations carry positive charge.
What element 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.
Why is the ionic radius of K+ smaller than CL?
Answer: In other words, K+ has bigger effective nuclear charge than Cl− , which translates to a bigger net positive charge felt by the outermost electrons. This will compress the energy levels a bit and make the ionic radius smaller for the potassium cation.
What is atomic radius of hydrogen?
120 pm
How do we calculate 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.