Best answer: Which metal has the largest 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.

Do metals have the largest atomic radius?

Metals – the atomic radius of a metal is generally larger than the ionic radius of the same element. Why? Generally, metals loose electrons to achieve the octet.

Which of the following has largest atomic radius?

2. Atomic radius decreases from left to right within each period. Because calcium is located closest to the bottom right on the periodic table, it has the highest atomic radius.

Which element has the largest ionic radius?

1 Answer. Ernest Z. K+ has the largest radius.

Why sodium has largest atomic radius?

In the zeroth group the atom gets stabilised due to the complete octet in the outermost shell due to which effective nuclear charge becomes lesser than the effective nuclear charge of chlorine which makes argon atom bigger than chlorine. … Then too, Sodium has a largest atomic radius in the period after Argon.

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Which is larger F 1 or F and why?

F-1 is larger than F because F has a greater positive charge and electrons repel the nucleus.

Which metal 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.

Which has largest radius?

Na has larger radii than Na+ because Na has equal number of protons and neutrons while Na+ has more number of protons than electron. Due to more number of proton effective nuclear charge increases in case of Na+ that’s why having smaller size.

How do you find 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.

Which has the largest radius Co3+ Mn3+ fe3+ Cr3+?

Fe 3+ has highest radii because by going left to right in the periodic table , the size get decreased so .. Fe 3+ >Co3+ >Cr3+ >Mn3+ .

Why is K bigger than Br?

Since potassium is located at the start of period 3, and bromine at the end of the same period, potassium will have a larger atomic radius than bromine, and thus the largest atomic radius of the four given atoms.

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Is K+ smaller than CL?

In other words, K+ has bigger effective nuclear charge than Cl− , which translates to a bigger net positive charge felt by the outermost electrons. This will compress the energy levels a bit and make the ionic radius smaller for the potassium cation. Therefore, the chloride anion will have the larger atomic radius.

Which has the largest radius O or O 2?

O2− is larger than O because the increase in electron repulsions that accompany addition of an electron causes the electron cloud to expand. O2− is larger than O because O is neutral but O2− has a charge 2−. … S2− is larger than O2− because for particles with like charges, size increases going down a family.

Which is bigger Na or RB?

Answer and Explanation: Generally, the atomic radius increases down the group. Both Rb and Na are in the same group, group 1. … Sodium (Na) has a radius 186 pm whereas Rubidium (Rb) 248pm and thus rubidium is bigger than sodium.

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.

Is mg bigger than na?

(i) The sodium ion (Na+) is larger than the magnesium ion (Mg2+) due to two effects.

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