Their Period number is common means their "Principal Quantum Numbers" are same
Hope this helps!
'C' is the only true statement on the list.
Step-up voltage transformers have a lower number of turns
in the primary than in the secondary winding.
The food you eat every day provides the nutrients you need to survive. These food components include the macronutrients – protein, carbohydrate and fat – that offer calories as well as play specific roles in maintaining your health. Micronutrients, such as vitamins and minerals, don’t act as an energy source but do serve a variety of critical functions to ensure your body operates as optimally as possible.
It is because that is how mirrors work, they reflect light, and since we see objects because we are seeing the light these objects reflect, what is reflected back by the mirror is what we see.
