The straing element of fifth period is

The starting element of fifth period is

The starting element in any period the periodic table is……..

The most metallic element in the fifth peroid is

The ending element in any period in the periodic table is…………

The period number in the long form of periodic table is not equal to A)Magnetic quantum number of any element of the period B)Atomic number of any element of the period C)Maximum azimuthal quantum number of any element of the period D)Maximum principal quantum number of any element of the period

The period number in the long form of the periodic table is equal to (A)Magnetic quantum number of any element of the period (B)Atomic number of any element of the period (C)Maximum principal quantum number of any element of the period (D)Maximum azimuthal quantum number of any element of the period

The number of elements in the fifth period of periodic table is