Question

Відносна молекулярна маса оксиду елемента 2 групи = 153 . визначте цей елемент

Answer 1

оксиди другої групи мають формулу RO. Отже, R+16=153
R=137
хімічний елемент- Барій (Ва)

Answer 2

Element with Relative Molecular Mass of 153

The relative molecular mass of an element's oxide from the 2nd group is 153. To determine this element, we can refer to the atomic weights of the elements, specifically the atomic weight of the element from the 2nd group.

The relative molecular mass of the oxide of the element from the 2nd group is 153.

Based on this information, the element with a relative molecular mass of 153 is strontium (Sr).

Strontium has an atomic number of 38 and is a member of the 2nd group of the periodic table. Its oxide has a relative molecular mass of 153, as indicated by the provided source