Find the number of inner transition elements among those having following atomic numbers :
29, 59, 74, 95, 102, 104, 89, 57, 72.

Decide which of the given atomic numbers are the atomic numbers of the inner transition elements. Atomic Number (Z) : 29, 59, 74, 95, 102, 104.

Find the number of unpaired electrons in the atom of the element having atomic number 16 .

Find the mean of the following numbers : 87, 92, 63, 78, 92, 59, 72, 66, 69.

Find the arithmetic mean of the following numbers : 88, 72, 33, 29, 70, 54, 86, 91, 57, 61

What are inner-transition elements? Decide which of the following atomic numbers are of the inner-transition elements 29,59,74,95, 102,104?

Find the median of the following numbers : 88, 72,33,29,70,54,86,91,57,61