Modern Periodic Law and the Present Form of the Periodic Table

Which one is non-metal among the given elements, $\mathrm{C},\mathrm{Si},\mathrm{Ge},\mathrm{Sn},\mathrm{Pb}$.

What is the valency of Californium ?

Assertion (A) : Sixth period is the longest period in the periodic table.

Reason (R) : Sixth period involves the filling of all the orbitals of the sixth energy level.

The atomic number of element $\mathrm{Unq}$ is

The element with atomic number $117$ if discovered would be placed in _____(halogen family/alkaline earth family).

The IUPAC name for the element with the atomic number $120$ is _____.

Element with valence shell electronic configuration as $(\mathrm{n}-1){\mathrm{d}}^5 {\mathrm{ns}}^1$ is placed in which of the following group and block of elements?

Among the elements from atomic number $1$ to $36$, the number of elements which have an unpaired electron in the $\mathrm{s}$-subshell is $6$.

Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius.

The element with atomic number $117$ if discovered would be placed in halogen family.

The first member of lanthanoid series is lanthanum.

Which of the following has highest value of ionic radius?

The atomic number of element $\mathrm{Unq}$ is

An element $\mathrm{A}$ belongs to third period and fifteenth group of the periodic table. Which one of the following is true regarding the outer electronic configuration of $\mathrm{A}$?

In Lanthanoid series, the element well known to exhibit $+4$ oxidation state is

What would be the IUPAC name and symbol for the element with atomic number $120$?

In crystals of which of the following ionic compounds, would you expect the maximum distance between centres of cations and anions.

Which among the following species has the same number of electrons in its outermost as well as penultimate shell ?

The correct arrangement for the ions in the increasing order of their radii is

The correct order of decreasing ionic radii among the following isoelectronic species is