write the chemical symbols for three different atoms or atomic cations with 12 electrons.
write the chemical symbols for three different atoms or atomic cations with 12 electrons.
Answer
Explanation:
Step1: Determine the atom with 12 electrons
For a neutral atom, the number of electrons is equal to the atomic number. The element with atomic number 12 is magnesium, and its chemical symbol is (Mg).
Step2: Consider a cation formed by losing electrons from an atom with more than 12 electrons
Sodium ((Na)) has an atomic number of 11. When it loses one electron ((Na^{+})), it has (11 - 1=10) electrons. Aluminum ((Al)) has an atomic number of 13. When it loses one electron ((Al^{+})), it has (13 - 1 = 12) electrons.
Step3: Consider another cation
Magnesium can also form a cation. But we already have (Mg) as a neutral atom. Let's consider a different element. Silicon ((Si)) has an atomic number of 14. When it loses two electrons ((Si^{2+})), it has (14- 2=12) electrons.
Answer:
(Mg), (Al^{+}), (Si^{2+})