Question

so if opposite charges attract, how many sodium ions (na +) do you think on atom of sulfur (s2 -) will attract?
na+
na+
2 x sodium ion
1x sulfur ion
total charges
2+
2-
final formula
na2s
1
2
5

Explanation:

Step1: Analyze ion charges

Sulfur ion ($S^{2 -}$) has a - 2 charge and sodium ion ($Na^{+}$) has a + 1 charge.

Step2: Determine number of $Na^{+}$

To balance the - 2 charge of sulfur ion, we need 2 sodium ions as $2\times(+1)= + 2$.

Answer:

B. 2