An element with symbol Y is represented by *. What is the atomic number and mass number if this element?Name the element mass number of this element? Name the element Y

yttrium

Explanation:

the atomic number of yttrium is 39 and the mass number of yttrium is 88.90585u.

element y is yttrium

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.