Why does fluorine have the smallest atomic radius?

Fluorine has more protons resulting in a greater nuclear charge, causing a greater attraction for electrons. … Fluorine has a smaller radius than lithium because of the greater positive charge of the nucleus, pulling electrons and the electron shells in closer.

Why does fluorine have a smaller atomic radius than carbon?

Why does fluorine have a smaller atomic radius than carbon? Explanation: … As atomic number increases, so does the number of positive protons in the nucleus. To the far left of a period, electrons are widespread within a new electronic shell.

What statement best explains why fluorine has a smaller atomic radius than oxygen?

Explain why fluorine has a smaller atomic radius than both oxygen and chlorine. Fluorine is keeping it’s electron very close to the nucleus. Making the atomic radius smaller. Atomic radius trend goes from left to right that atomic radius decreases.

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 are two reasons why an atom would have a small atomic radius?

This means that, as more protons are added, the nucleus gets a stronger positive charge which then attracts the electrons more strongly and pulls them closer to the atom’s nucleus. The electrons being pulled closer to the nucleus makes the atom’s radius smaller.

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.

Does fluorine have a larger atomic radius?

4. Explain, in terms of nuclear charge and number of principle energy levels, why Fluorine has a SMALLER atomic radius than lithium? Fluorine has a smaller radius than lithium because of the greater positive charge of the nucleus, pulling electrons and the electron shells in closer.

Which element has a larger 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.

Which element has a larger atomic radius sodium or lithium?

Lithium is in period 2 in group 1/IA. This means that its valence electron is in the second energy level. Sodium is in period 3 in group 1/IA, so its valence electron is in the third energy level, therefore it has a greater atomic radius than lithium.

Why does oxygen have a smaller atomic radius than nitrogen?

The eight protons in oxygen atom’s nucleus will exert more force than nitrogen’s seven electrons. Also, oxygen has same number of shells as nitrogen. Thus electrons in oxygen atom will be closer to nucleus than in the case of nitrogen. … When electrons are closer it means atomic radius is smaller.

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

What is the atomic radius of SI?

210 pm

Why does atomic radius increase from right to left?

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. Atomic radius increases from top to bottom within a group. This is caused by electron shielding.

Which element has a larger atomic radius than phosphorus?

Atomic Radius of the elements

What causes a larger atomic radius?

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.