Which is not anomalous pair of elements in the Mendeleev's periodic table?

• Ar and K

• Co and Ni

• Te and I

• Al and Si

Representative elements belong to

• s-and p-block

• d-block

• d- and f-block

• f-block

True statement is

• All the transuranic elements are synthetic elements

• Elements of third period are called transition elements

• Element of [Ar] 3d 10 4s 2 configuration is placed in IIA group

• Electronic configuration of elements of a group is same

Which of the following match is correct

• Last natural element – Uub

• General electronic configuration of IA group –ns 2

• All inert gas elements lies between 2nd – 6th period

• Typical elements – 3rd period elements

The electronic configuration of elements X and Z are 1s 2 2s 2 2p 6 3s 2 3p 5 and 1s 2 2s 2 2p 5 respectively. What is the position of element X with respect to position of Z in the periodic table

• Just below element Z

• Just above Z

• Left to the Z

• Right to the Z

Which of the following is not a Dobereiner triad

• H, F, Cl

• N, O, F

• P, As, Sb

• S, Se, Te

Select the incorrect statement for Lother Meyer's curve

• Curve is plotted between atomic weight and atomic volume

• Alkali metals occupy maxima of curve

• Halogens occupy descending portions of the curve

• Transition metals occupy bottom portions of the curve

The size of the following species increases in the order

• Mg 2+ < Na + < F -

• F - < Na + < Mg 2+

• Mg 2+ < F - < Na +

• Na + < F - < Mg 2+

Highest size will be of

• Br -

• I

• I -

• I +

Element Cu has two oxidation states Cu +1 & Cu +2. the right order of radii of these ions

• Cu +1 > Cu +2

• Cu +2 > Cu +1

• Cu +1 = Cu +2

• Cu +2 ³ Cu +1