The element in the second period that has the largest atomic radius is the Lithium (Li).
What element has the largest atomic radius in period 2?
So, for Period 2, the Group1 Alkali Metal (lithium, lowest Z) has the largest atomic radius and the Group 7/17 Halogens & Group 0/18 Noble Gas (fluorine & neon, highest Z’s) have the smallest atomic radii (there is some uncertainty in the noble gas radii).
What elements have the largest atomic radius?
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.
Which element in Period 2 has the most mass?
The element neon, in period 2, has the most mass.
Which element in Period 2 has the smallest atomic radius?
Fluorine is the element with smallest atomic radii.
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.
Which element has the largest atomic radius Na Mg K Ca?
Answer: Potassium (K) with an atomic number of 19 has the largest atomic radius. This is because sodium and potassium are elements of group 1. On moving from top to bottom in a group, the atomic radius increases.
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 element has the highest electronegativity value?
Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element, while francium is one of the least electronegative.
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.
What is the atomic radius of arsenic?
185 pm
Which ion has the largest atomic radius?
1 Answer. Ernest Z. K+ has the largest radius.
What number increases from 3/10 to Period 2?
In the periodic table, atomic number increases from 3 to 10 in period 2. Explanation: Atomic numnber is the total number of protons present in an atom. And, when we move across a period then there occurs an increase in atomic number of the elements.
Which element in period two has the least mass?
Lithium has the least mass, while Neon has the most mass. Lithium: The elements in Period 2 of the periodic table are: Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, and Neon. Lithium has a mass of about 6.941.
Which is more metallic lithium or beryllium?
Lithium is alkali metal with valency 1 and it is group 1 element due to which it can easily release its electron to form the stable cation while the beryllium is group 2 element or alkaline earth metal with a valency 2 so as it needs to lose two electrons to form the stable cation and hence it will require more energy …