Element X contains 4 electrons in its outer shell and 125 neutrons in its nucleus. what is element X? (beryllium/carbon/tin/lead)​

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g

What will most likely happen when two bromine atoms bond together?