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 is bigger in size Na or K?
1 Answer. K+ is larger than Na+ because the ionic radius increases in a particular group on moving from top to bottom due to increase in the principle energy shell though the number or electrons in the valence shell remain the same.
Which element has the largest atomic radius as N?
Explanation: Francium has the largest, Helium has the lowest. Atomic radius increases as you go to the left and downward due to the attraction of electrons and the nucleus in an atom.
Does NA have a larger atomic radius?
The size of an atom decreases from left to right. This is because as the number of electrons increases, the attractive forces on each electron becomes stronger. … As the atomic mass increases as you move down the periodic table, Na has a larger atomic radius.
Does Na or Na+ have a larger atomic radius?
In general, atomic radius is the distance between the centre of the nucleus and the outermost shell of electrons. In Na atom, the outermost shell is the ‘M’ (3rd shell)shell which has one electron. … Hence Na+ is smaller than Na atom.
Is K+ larger than Na+?
K+ is larger than Na+ because the ionic radius increases in a particular group on moving from top to bottom due to increase in the principle energy shell though the number or electrons in the valence shell remain the same.
Which is bigger Na or Na+?
The total number of electrons is 10 in case of Na+ and 11 in case of Na, while the number of proton is same i.e. 11 in both case.
Who 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.
What elements have the smallest atomic radius?
Explanation: Helium has the smallest atomic radius.
Which has largest radius?
Thus O2− has a minimum z-effective thus largest radius.
Why is the atomic radius of K bigger than na?
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.
Does oxygen have a larger atomic radius than fluorine?
Atomic radii of oxygen is 48 pm. In moving from left to right across a period, the atomic radius decreases as the effective nuclear charge increases. Hence, fluorine has smaller atomic radius than oxygen.
What element in the third period has the largest atomic radius?
Considering this trend Sodium is having a highest atomic radius in 3rd period.
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.
Which is larger NE or Na+?
Since Na+ has a higher effective nuclear charge, there is a greater force of attraction between the protons in the nucleus and the valence electrons of Na+, so Na+ is smaller than Ne.
Why is CL larger than Na+?
Na atoms are larger than Cl atoms because the electron cloud of Cl is pulled in more tightly by the increased number of protons in the nucleus. Na+ ions are smaller than Cl- ions because the Na+ ions have electrons in only two energy levels and Cl- ions have electrons in three levels.