Your question: Which element in the third period has the smallest atomic radius?

In the third period of the periodic table, the element which has the smallest atomic radius is Argon.has 71 pm. Scandium has 184 pm, Silicon has 111 pm and Sodium has 190 pm.

Which element has the smallest atomic radius in period 3?

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

Which elements have the smallest atomic radius?

Explanation: Helium has the smallest atomic radius.

Which element in period 3 has the largest atomic radius?

• 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. …
• Considering this trend Sodium is having a highest atomic radius in 3rd period.

Which of the following has smallest radius?

Hence, Cl has the smallest radius.

Does atomic radius increase Period 3?

Explanation of this trend

Going across period 3: the number of protons in the nucleus increases so … … therefore the force of attraction between the nucleus and the electrons increases … and the atomic radius decreases.

What 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).

What element has 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.

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.

Which has a larger atomic radius S or S2?

(ii) Explain why the radius of the S2- ion is larger than the radius of the S atom. The nuclear charge is the same for both species, but the eight valence electrons in the sulfide ion experience a greater amount of electron-electron repulsion than do the six valence electrons in the neutral sulfur atom.

Why is the ionic radius of K+ smaller than CL?

Answer: 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.

What causes the atomic radius of the elements to decrease across Period 3 from left to right?

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.

Which element in Period 4 has the largest atomic radius?

For Period 3, the Group1 Alkali Metal (potassium, lowest Z) has the largest atomic radius and the Group 7/17 Halogens & Group 0/18 Noble Gas (bromine & krypton, highest Z’s) have the smallest atomic radii (there is some uncertainty in the noble gas radii).
…

Which of the following has the minimum atomic radius?

Fluorine has a minimum atomic radius. The atomic radius of Fluorine is 42 pm.

Which ion has lowest atomic radius?

Because K + has the greatest nuclear charge (Z = 19), its radius is smallest, and S 2− with Z = 16 has the largest radius.

Which element has the smallest atomic radius quizlet?

Therefore, rubidium has the largest atomic radius whereas helium has the smallest.