Which best describes valence electrons? A. all the electrons in an atom
B. the electrons closest to the nucleus
C. the electrons in the outermost orbital

Ineed ! it’s science and it’s due tomorrow!

Name the element in group 17, period 2. (periodic table)

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90