Study the variation in the atomic radii of second group elements are given below and answer the question given. In this second period of elements which element has the smallest atomic size?

In this second period of elements fluorine (F) has the smallest atomic size. Fluorine is a chemical element with the atomic number 9. It is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas. In general, the atomic radius decreases as we move from left to right in a period with an increase in the nuclear charge of the element.

Study the variation in the atomic radii of second group elements are given below and answer the question given. In this second period of elements which element has the smallest atomic size?

In this second period of elements fluorine (F) has the smallest atomic size. Fluorine is a chemical element with the atomic number 9. It is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas. In general, the atomic radius decreases as we move from left to right in a period with an increase in the nuclear charge of the element.

State the limitations of Newlands' Law of Octaves?

The limitations of Newlands' Law of Octaves are- * Several elements were fit into the same slots in Newland’s periodic classification. For example, cobalt and nickel were placed in the same slot. * Elements with dissimilar properties were grouped together. For example, the halogens were grouped with some metals such as as cobalt, nickel, and platinum. * Newland’s law of octaves held true only for elements up to calcium. Elements with greater atomic masses could not be accommodated into octaves. * The elements that were discovered later could not be fit into the octave pattern. Therefore, this method of classifying elements did not leave any room for the discovery of new elements.

Do as directed: In the Modern Periodic Table I am an element belonging to the second group and third period. Who am I?

In the Modern Periodic Table I am an element belonging to the second group and third period is magnesium. Magnesium is a chemical element with the symbol Mg and atomic number 12 . It is a shiny grey solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure.