Which of the following sequences of elements would all have four valence electrons? B, Si, As, Te

C, Si, Ge, Sn

O, S, Se, Te

Ga, Ge, As, Se

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

i don't know people like to fight everywhere rip.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.