Question

З наведених металів найбільш легким є: 1. Na 2. Ca 3. Al 4. Li

Answer 1

Ответ:

4. Li (літій)

Літій - найлегший метал

Answer 2

The lightest metal from the list is lithium

The four metals listed in the question are:

1. Sodium (Na) 2. Calcium (Ca) 3. Aluminum (Al) 4. Lithium (Li)

The lightest metal out of these four is lithium. Lithium has the lowest atomic mass - its mass is 6.94 atomic mass units (amu).

Sodium has an atomic mass of 22.99 amu, calcium has an atomic mass of 40.08 amu, and aluminum has an atomic mass of 26.98 amu. All of these metals are heavier than lithium.

Therefore, the answer is that the lightest metal from the given list of sodium, calcium, aluminum and lithium is lithium.