Question

how many electrons does li - have? *
1
2
3
4

Explanation:

Step1: Determine the atomic number of Li

The atomic number of Li (lithium) is 3. In a neutral atom, the number of electrons equals the atomic number. So, a neutral Li atom has 3 electrons.

Step2: Analyze the Li⁻ ion

The Li⁻ ion has a negative charge. A negative charge means an extra electron. So, the number of electrons in Li⁻ is \(3 + 1=4\).

Answer:

4