Question

Расположите химические элементы по возрастанию атомной массы: неон.селен.молибден

Answer 1

Ne(20),Se(79), Mo(96).

Answer 2

Arranging Elements by Increasing Atomic Mass

To arrange the elements neon, selenium, and molybdenum in order of increasing atomic mass, we can refer to the periodic table. The atomic mass of an element represents the average mass of all the isotopes of that element.

Here is the arrangement of the elements:

1. Neon (Ne) - Neon has an atomic number of 10 and an atomic mass of approximately 20.18 atomic mass units (u). 2. Selenium (Se) - Selenium has an atomic number of 34 and an atomic mass of approximately 78.96 u. 3. Molybdenum (Mo) - Molybdenum has an atomic number of 42 and an atomic mass of approximately 95.95 u.

Therefore, the elements arranged in order of increasing atomic mass are: neon, selenium, molybdenum.