Fluorine is the element with smallest atomic radii.
Which element has the smallest radius in period 2?
As we move from left to right, atomic size decreases because of increase in nuclear charge but no change in the shells. Hence, Last element will be the smallest element in the period. Hence, fluorine has small radius in the second period.
Which element has the smallest 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 is the trend in atomic radius across Period 2?
Explanation of this trend
there are more filled shells between the nucleus and the outer electrons … the outer electrons are more shielded from the attraction of the nucleus … so the electrons in the higher energy levels are further from the nucleus … the atomic radius increases.
Which of the following has smallest radius?
Hence, Cl has the smallest radius.
What is the lightest element on earth?
Hydrogen is the lightest element. Dihydrogen, H2, is a colorless, odorless, tasteless gas.
Which element in the second period has the largest atomic radius?
The element in the second period that has the largest atomic radius is the Lithium (Li).
Which elements have the highest atomic radius?
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.
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.
What is the atomic radius of RB?
290 pm
Does atomic radius increase across a period?
In general, atomic radius decreases across a period and increases down a group. … A higher effective nuclear charge causes greater attractions to the electrons, pulling the electron cloud closer to the nucleus which results in a smaller atomic radius.
Does atomic radius increase with atomic number?
1 Answer. The atomic number is the amount of protons present in the atom. Because of that, we can say that the atomic number represents the positive charge of the atom. As the positive charge of the atom increases the atomic radius decreases because the positive charge will bring electrons closer to the nucleus.
Does atomic radius decrease down Group 2?
Progressing down group 2, the atomic radius increases due to the extra shell of electrons for each element. Going down the group, the first ionisation energy decreases. … Generally the melting point of the metals decreases down the group.
Which one of the following atoms n p/s o has the largest atomic radius?
So Cesium has the largest atomic radius among the given elements.
Which element has the smallest atomic radius quizlet?
Therefore, rubidium has the largest atomic radius whereas helium has the smallest.
Which ion has the largest radius?
1 Answer. Ernest Z. K+ has the largest radius.