Justifique porque en la tabla periódica propuesta por Dmitri Mendeleev algunos elementos no cumplía con el ordenamiento creciente de la masa atómica Ayúdenme xf:(

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

How many liters of 3.0 m naoh solution will react with 0.60 liters of 4.0 m h2so4? h2so4 + naoh → na2so4 + h2o 1.2 l 1.6 l 2.4 l 2.8 l