Question

3s² signifies that the electrons are in shell number 1 the electrons are in a subshell type _2_ there are 3__ electrons in this designation a. 0 b. 1 c. 2 d. 3 e. 4 f. 5 g. 6 h. s i. p j. d k. f

Explanation:

Step1: Identify shell number

The number before the letter in electron - configuration notation represents the shell number. In 3s², the number 3 indicates the shell number.

Step2: Identify sub - shell type

The letter in electron - configuration notation represents the sub - shell type. In 3s², the letter s indicates the sub - shell type.

Step3: Identify number of electrons

The superscript in electron - configuration notation represents the number of electrons in that sub - shell. In 3s², the superscript 2 indicates there are 2 electrons.

Answer:

1. D. 3
2. H. s
3. C. 2