It made them want to repent cause it scared them ...That was a weird read...
Answer:
Explanation:
The principal quantum number is the quantum number denoted by n and which indirectly describes the size of the electron orbital. It is always assigned an integer value (e.g., n = 1, 2, 3...), but its value may never be 0. An orbital for which n = 2 is larger, for example, than an orbital for which n = 1.
A. to highlight how remarkable Curie's later achievements were, considering her difficult beginnings