Question

an element Y has 13 electrons and 15 protons calculate :
1.atomic number and mass number
2.its valency
3.symbol of the Ion it will form and the number of subatomic particles in the ion
4.whether Y is a metal or nonmetal ​

Answer 1

Answer:

1. Atomic no. of Y elements are 28 and mass no. is 58.
2. its valency has 2.
3. ??? i don't know sorry.
4. Y is metal..

Explanation:

i

Answer 2

Answer:

1. Atomic no. of Y elements are 28 and mass no. is 58.

2. its valency has 2.

.

3.Y is metal..