Which are the starting elements in periods $1$ to $7$?

In terms of period and group,where would you locate the element with $Z = 114$?

The element with the lowest atomic number that has a ground state electronic configuration of $(n - 1)d^6 ns^2$ is located in the

In what manner is the long form of periodic table better than Mendeleev's periodic table? Explain with examples.

The element with atomic number $17$ is placed in which group of the periodic table?

Assign the position of the element having outer electronic configuration in the periodic table:
$(i)$ $ns^{2} np^{4}$ for $n=3$
$(ii)$ $(n-1)d^{2} ns^{2}$ for $n=4$
$(iii)$ $(n-2)f^{7} (n-1)d^{1} ns^{2}$ for $n=6$