Question

How many digits does a NICN item contain?
A) 5
B) 7
C) 10
D) 12

Answer 1

Nitrogen, with atomic number 7, has two electron shells, with 2 electrons in the first shell and 5 in the second.

Step-by-step explanation:

The number of electron shells an element has can be deduced from its position in the periodic table based on its atomic number. Nitrogen, with an atomic number of seven, will typically have two electron shells. The first shell can hold up to 2 electrons, and the second one can hold up to 8 electrons. Since nitrogen's atomic number is 7, it needs 2 electrons to fill the first shell and the remaining 5 go into the second shell.