Periodic Classification of Elements Test - 5

Which of the following is the outermost shell for elements of period 2?

In Mendeléev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found place in the Periodic Table later?

Which of the following statement(s) about the Modern Periodic Table are incorrect?

(i) The elements in the Modern Periodic Table are arranged on the basis of their decreasing atomic numbers.

(ii) The elements in the Modern Periodic Table are arranged on the basis of their increasing atomic masses.

(iii) Isotopes are placed in adjoining group(s) in the Periodic Table.

(iv) The elements in the Modern Periodic Table are arranged on the basis of their increasing atomic numbers.

The Modern Periodic Table contains

Which of the following gives the correct increasing order of the atomic radii of O, F and N?

The electronic configuration of an element is 2, 8, 8, 2. This element belongs to

Arrange the following elements in the order of their decreasing metallic character

Na, Si, Cl, Mg, Al

Three elements B, Si and Ge are

The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?

Arrange the following elements in the order of their increasing non-metallic character—Li, O, C, Be, F.

Which of the following elements will form an acidic oxide?

What type of oxide would Eka-aluminium form?