What is the total number of electrons needed to completely fill all of the orbitals in an atoms second principal energy level

Which element is least likely to undergo a chemical reaction

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.

Which statement are accurate about snow flakes