Question

ch. 3 - compound names & formulas started: sep 16 at 7:12pm quiz instructions good luck. question 9 write the name of the following: na₂s. disodium sulfide

Explanation:

Step1: Identify the elements

The compound contains sodium (Na) and sulfur (S).

Step2: Name the metal first

The metal is sodium.

Step3: Name the non - metal with 'ide' ending

Sulfur becomes sulfide.

Step4: Indicate the number of sodium atoms

There are 2 sodium atoms, but in ionic compounds like this, the prefix 'di -'is not used for the metal when it has a fixed charge (sodium has a + 1 charge). So it's just sodium sulfide.

Answer:

sodium sulfide