Question: Which Of The Following Has The Largest Atomic Radius?

The element which has the largest atomic radius is Cesium.

Atomic Radius is defined as the distance between the center of the nucleus and the outermost shell of an atom.

Cesium has 6 orbital shells, which means that it automatically is big.

Which elements have 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.

Which has a larger atomic radius?

Periodic Trends of Atomic Radius. An atom gets larger as the number of electronic shells increase; therefore the radius of atoms increases as you go down a certain group in the periodic table of elements. In general, the size of an atom will decrease as you move from left to the right of a certain period.

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Which of the following has the highest atomic radius?

Atomic Radius of the elements

Helium 31 pm 161 pm
Neon 38 pm 165 pm
Fluorine 42 pm 166 pm
Oxygen 48 pm 167 pm
Hydrogen 53 pm 169 pm

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Which has the largest atomic size?

Considering all the information about atomic size, you will recognize that the largest atom on the periodic table is all the way to the left and all the way to the bottom, francium, #87, and the smallest atom is all the way to the right and all the way to the top, helium, #2.

Which of the following elements has the largest covalent radius?

Atomic Radius of the elements

Helium 31 pm 247 pm
Neon 38 pm 253 pm
Fluorine 42 pm 265 pm
Oxygen 48 pm 298 pm
Hydrogen 53 pm N/A

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Why does potassium have a larger atomic radius than calcium?

Obviously potassium(K) because it has less number of protons in nucleus as well as less number of electrons in its orbit as compare to calcium(Ca) therefore it has less attraction force between orbit and centre nucleus than calcium. K has a larger radius, because K has 19 protons with it and Ca has 20 protons.

Why is the atomic radius of neon larger than fluorine?

Because repulsion between the different shells of electron thus increase the size so much that it is even bigger than first element in period thats why neon atomic size is grater than fluorine, and it is also because of structural stability of neon.

Why atomic radius decreases across a period?

Atomic radius decreases across a period because valence electrons are being added to the same energy level at the same time the nucleus is increasing in protons. The increase in nuclear charge attracts the electrons more strongly, pulling them closer to the nucleus.

What is the atomic radius of barium?

0.222 nm

Which element has the largest atomic radius as NP SB?


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Which element has the largest atomic number?

The elemenents of the periodic table sorted by atomic mass

Atomic Mass Name chemical element number
1.0079 Hydrogen 1
4.0026 Helium 2
6.941 Lithium 3
9.0122 Beryllium 4

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Why size of anion is larger than parent atom?

Cations are smaller in size because they are formed by loss of electrons and anions are larger in size because they are formed by the gain of electrons. cation than in its parent atom. Therefore, a cation is smaller in size than its parent atom.

Which element in the third period has the largest atomic radius?

(B) Trends in the Atomic Radius of Elements in Period 3

Element Na Mg
Energy Level being filled (Valence Shell) third (M) third (M)
Nuclear Charge (charge on all protons) 11+ 12+
Atomic Radius (pm) 154 130
General Trend (largest)

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Which effect on atomic size is more significant?

Which effect on atomic size is more significant, an increase in nuclear charge across a period or an increase in occupied energy levels within a group? Explain. Across a period from left to right the principal energy level remains the same, but the nuclear charge increases.

What is the difference between atomic size and atomic radius?

Because atomic size means the distance from nucleus to the outer most orbit where as the atomic radius means the distance from nucleus to the outermost orbit. So, in normal state both atomic radius and size remains same but in excited state it is different.

Why does atomic radius decrease from left to right?

Atomic radius decreases from left to right within a period. This is caused by the increase in the number of protons and electrons across a period. One proton has a greater effect than one electron; thus, electrons are pulled towards the nucleus, resulting in a smaller radius. This is caused by electron shielding.

Why does atomic radius increase as you go down a group?

– The number of energy levels increases as you move down a group as the number of electrons increases. Each subsequent energy level is further from the nucleus than the last. Therefore, the atomic radius increases as the group and energy levels increase. 2) As you move across a period, atomic radius decreases.

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How do you find the atomic radius of an element?

Subtract the radius of one of the atoms from the total distance between the nuclei if the bond is ionic. For example, if the radius of one of the atoms is 60 pm, and the distance between the nuclei of the two atoms is 160 pm, the radius of the other atom is 100 pm.

Why does lithium have the largest atomic radius?

As we go from Li to F, atomic radius of the atoms will DECREASE. This is due to increased nuclear charge (number of protons within each atom). This means the increased nuclear charge has a greater force of attraction on the electrons, drawing them closer to the nucleus, hence causing a decrease in atomic radius.

Is calcium harder or softer than potassium?

Calcium atoms have smaller radii than potassium atoms since calcium atoms have a greater nuclear charge. Since there will be more delocalized electrons per atom throughout calcium than potassium, the bond strength is stronger in calcium than potassium.

Which has larger radius mg or CA?

Calcium has a larger atomic radius than Magnesium. If you look on the period table you will notice Magnesium atomic number is 12, while Calcium is 20.

How do you find the atomic radius?

The radius of an atom can only be found by measuring the distance between the nuclei of two touching atoms, and then halving that distance. As you can see from the diagrams, the same atom could be found to have a different radius depending on what was around it. The left hand diagram shows bonded atoms.

What is the atomic radius of molybdenum?

Atomic number 42
Density 10.2 at 20°C
Melting point 2610 °C
Boiling point 4825 °C
Vanderwaals radius 0.139 nm

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What is the atomic radius of boron?

180 pm

Photo in the article by “Wikimedia Commons”

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