Question

In terms of period and group where would you locate the element with Z= 120

Answer 1

Elements with atomic numbers from Z = 87 to Z = 120 are present in the 7th period of the periodic table.

Thus, the element with Z = 120(Flerovium) with atomic weight 289 & a poor metal is present in the 7th period & 14th group of the periodic table

In the 7th period, first two elements with

Z = 87 and Z= 88 are s-block elements, the next 14 elements excluding

Z = 89 i.e., those with

Z = 90 – 103 are f – block elements, ten elements with

Z = 89 and Z = 104 – 112 are d – block elements, and the elements with

Z = 113 – 118 are p – block elements.

• Therefore, the element with Z = 120is the second p – block element in the 7th period.

Answer 2

Explanation:

ANSWER

The element with Z = 120will have the electronic configuration [Rn]5f 146d 107s 27p 2

.

Thus, the element belongs to the seventh period. The electron enters p orbital. Hence, it belongs to p block. The group number is 10+4=14.

The element is Flerovium

Hence, the element belongs to the seventh

period and 14th group.