Best answer: What element in the second period has the largest?

Lithium is the first element of the second period and atomic size decreases across the period. Therefore, Li has the largest size.

Which element in Period 2 has the largest atomic radius?

The atomic radius of an atom increases from top to bottom in a group, and decreases from left to right across a period. So, Lithium is the largest element in the second period.

Which element in Period 2 has the most mass?

The element neon, in period 2, has the most mass.

Which of the following element of second period has second highest radius?

Properties of Elements in Period 2 of the Periodic Table

What element in the second period has the largest atomic radius group of answer choices carbon lithium potassium neon?

The correct option is D. The elements in the second period are lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine and neon. In the second period, the atomic radius of the elements decreases across the period, thus lithium has the highest atomic radius of 152 picometer while neon has the least [67 picometer].

Which element has the smallest 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 is the trend in atomic radius across Period 2?

Atomic radius is the distance from the atom’s nucleus to the outer edge of the electron cloud. In general, atomic radius decreases across a period and increases down a group. Across a period, effective nuclear charge increases as electron shielding remains constant.

What number increases from 3/10 to Period 2?

In the periodic table, atomic number increases from 3 to 10 in period 2. Explanation: Atomic numnber is the total number of protons present in an atom. And, when we move across a period then there occurs an increase in atomic number of the elements.

Which element in period two has the least mass?

Lithium has the least mass, while Neon has the most mass. Lithium: The elements in Period 2 of the periodic table are: Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, and Neon. Lithium has a mass of about 6.941.

Which element has atoms with the smallest mass?

This list contains the 118 elements of chemistry. For chemistry students and teachers: The tabular chart on the right is arranged by Atomic mass (weight). The lightest chemical element is Hydrogen and the heaviest is Hassium. The unity for atomic mass is gram per mol.

Which element has the smallest atomic radius in second period?

As we move from left to right, atomic size decreases because of increase in nuclear charge but no change in the shells. Hence, Last element will be the smallest element in the period. Hence, fluorine has small radius in the second period.

Which element has lowest electronegativity value?

The element with the lowest electronegativity value is francium, which has an electronegativity of 0.7. This value uses the Pauling scale to measure electronegativity. The Allen scale assigns the lowest electronegativity to cesium, with a value of 0.659.

Which of the group 13 elements is the largest?

While, aluminum, indium, and thallium have typical metal properties, gallium has the largest liquid range of any element. Boron exists as a molecular compound in the solid state, hence its high melting point.
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Physical properties.

Which has largest radius?

Since the atomic radius decreases in a period but increases down the group so Sr of group II and period V is largest in size.

Why is oxygen in period 2?

The second period contains the elements lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon. … Period 2 elements obey the octet rule in that they need eight electrons to complete their valence shell, where at most eight electrons can be accommodated: two in the 2s orbital and six in the 2p subshell.

Which element has a larger atomic radius than phosphorus?

Atomic Radius of the elements