Table of Contents
- 1 Why are the atomic size of group 18 elements larger than that of group 17 elements?
- 2 Which element in group 17 has the largest atomic radius?
- 3 Why does noble gases have larger radius than halogen group?
- 4 Which has a larger atomic radius S or O?
- 5 How do elements in the same group have the same atomic radius?
Why are the atomic size of group 18 elements larger than that of group 17 elements?
Across the period in the periodic table, atomic size decreases up to halogens(group-17 elements) but increases in noble gases(group-18 elements). This is because in case of inert or noble gases all the orbitals are completely filled and hence inter electronic repulsions are maximum.
Why the atomic size of inert gas is comparatively bigger than Group 17 element of the same period?
Noble gases have bigger atomic size than halogens because van de Waals radii are bigger than covalent radii.
Why does the atomic radius get larger down a group in the periodic table?
In general, atomic radius decreases across a period and increases down a group. Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the outermost orbital. This results in a larger atomic radius.
Which element in group 17 has the largest atomic radius?
Atomic radius increases as you go down the Group 17 elements from top to bottom as an additional energy level (electron shell) is being added to each successive element….(B) Trends in the Atomic Radius of Group 17 (VIIA, Halogens) Elements.
| Element | fluorine |
|---|---|
| Atomic Number (Z) | 9 |
| Symbol | F |
| Simple Electron Configuration | 2,7 |
Why does noble gases have zero electron affinity?
Noble gas elements have completely filled outer-shell. Such electronic configurations are highly stable and as such noble gases find it difficult to accept electrons. Thus electron affinity of noble gas elements is zero.
Why atoms with large atomic radii and low ionisation potential are more metallic in nature?
Metals are electropositive in nature i.e. they can lose one or more electrons easily. Atoms with large atomic radii and low ionisation potential can easily lose one or more electrons as the nuclear pull on the outer electrons is less. As such these atoms are more metallic in nature.
Why does noble gases have larger radius than halogen group?
noble gases have comparatively higher atomic size than corresponding halogens because of the reason that vander waal’s radii (present in noble gases) is much larger than ionic and covalent radii (present in other elements).
Why do noble gases have larger atomic radius?
Now, the actual reason of that why noble gases have comparatively large atomic sizes is because in case of inert or noble gases all the orbitals are completely filled means they have s2p6 configuration and hence inter electronic repulsions are maximum resulting they do not form molecules, Moreover in case of noble …
What is atomic radius How does the atomic radii of the elements change in a group?
In general, atomic radius reduces as one progresses through a period and increases as one progresses through a group. The number of energy levels (n) grows as one moves down a group, resulting in a greater distance between the nucleus and the outermost orbital. As a result, the atomic radius increases.
Which has a larger atomic radius S or O?
Sulfur is in the same Group as oxygen and one Period lower, so its outer electrons occupy orbitals from the n = 3 level while oxygen’s outer electrons occupy orbitals from the n = 2 level. Consequently for the neutral atoms, S would be larger than O.
Which has a larger atomic radius?
francium
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 does the radius of zero group elements increase?
As we move from left to right in a period atomic radius decreased as the effective nuclear charge increases .Zero group elements have fulfilled electrons so electronic repulsion predominates over the increase in effective nuclear charge hence the radius of zero group elements increases.
How do elements in the same group have the same atomic radius?
Elements in the same period have the same number of electron shells, while elements in the same group have the same number of valence electrons. How do you find the atomic radius? The atomic radius is calculated by measuring the distance between the nuclei of two identical atoms bonded together. Half this distance is the atomic radius.
Why does the atomic radius of some elements decrease?
This means the electrons are pulled more closely to the nucleus, reducing the size of the atomic radius. Which element has the smallest atomic radius? Helium has the smallest atomic radius at 31 picometers. Helium is in the top period and the farthest right group, which follows the patterns of atomic radius on the periodic table.
Which element has the smallest radius in the periodic table?
Which element has the smallest atomic radius? Helium has the smallest atomic radius at 31 picometers. Helium is in the top period and the farthest right group, which follows the patterns of atomic radius on the periodic table.