Periodic Table and Periodicity

Which from following oxides is amphoteric in nature?

Which element from following has positive electron gain enthalpy?

Identify the most electronegative element by the following.

What happens to the size of atoms in p-block elements when we move from left to right in the same period?

Which group elements have the smallest atomic radii in their respective periods?

Identify the group of periodic table that contains element Astatine.

Which of the following elements has highest electronegativity?

Which of the following elements has highest electronegativity?

Identify isoelectronic pair from following.

Which is the correct increasing order of atomic radii of $\mathrm{Na}, \mathrm{K}, \mathrm{Mg}, \mathrm{Rb}$ ?

Which among the following elements has highest electronegativity?

Which from following elements has highest value of ionization enthalpy $\left(\Delta_{\mathrm{I}} \mathrm{H}_1\right)$ ?

What is the value of electronegativity of oxygen?

Identify the element having lowest first ionization enthalpy.

Which of the following elements belongs to first group and fifth period of periodic table?

Identify the element with lowest electronegativity.

Which of the following elements belongs to second group and fifth period of periodic table?

Which element from following has largest atomic size as compared to other three?

If four different elements A, B, C and D having electronic configuration as $\mathrm{A}=[\mathrm{Ne}] 3 \mathrm{~s}^2 3 \mathrm{p}^4$, $B=[\mathrm{Ne}] 3 \mathrm{~s}^2 3 \mathrm{p}^5, \mathrm{C}=[\mathrm{Ar}] 3 \mathrm{~d}^{10} 4 \mathrm{~s...

Identify the element having general electronic configuration \(\mathrm{ns}^2 \mathrm{np}^4\) from following.

Which group elements from following are called as chalcogens?

Identify the element having positive electron gain enthalpy.

Identify FALSE statement from following.

Which from following series of elements is correctly arranged according to their decreasing order of ionisation enthalpy \(\left(\mathrm{IE}_1\right)\) ?

Which from following is a correct decreasing order of ionisation enthalpy for different elements?

What is the position of copper in long form of periodic table?

Which from following elements belongs to group 17 of periodic table?

What is the position of transition elements from \(\mathrm{Sc}\) to \(\mathrm{Zn}\) in long form of periodic table?

Which from following is a CORRECT decreasing order of ionization enthalpies of different elements?

Which element from following is a soft element?

Which among the following formulae is correctly represented according to stock notation?

Identify the use of mixture of \(\mathrm{Ar}\) and \(\mathrm{N}_2\) from following.

Which among the following oxides is acidic in nature?

Identify amphoteric oxide from following.