Which of the following excited state electron configurations of C would require the longest wavelength of light to produce? Question 23 options:

1s22s22p13s1

1s22s22p2

1s22s22p24s1

1s22s22p13p1

Explanation:

Well ik its not math for this but for the first one if u add

22+22+13+1 u get 58

then second one 1+22+22+2=47

1+22+22+24+1=70

1+22+22+13+1=59

U notice how that most or some are all going up to 50 except the third one

So that means its 1s22s22p24s1

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance