What element electron configuration 1s2 2s2 2p6 3s2 3p5

What does the name iron (II) in a compound indicate about the cation? A an 11 + charge B a 2 - charge C a 2 + charge

Which of the followings represents a negatively charged ion

Cancer is when what process is uncontrolled

7. Which statement is true about particles in ice and in boiling water? A. Particles are the same. B. Particles are just as far apart in each state. C. Particles are moving faster in ice than in boiling water D.

The ionic charge of an element in Group 6A is 2-. -True -False

Water (3030 g) is heated until it just begins to boil. If the water absorbs 5.49*105 J of heat in the process, what was the initial temperature of the water?

Identify the number of core and valence electrons for each atom. Xe : core electrons Xe : valence electrons Ca : core electrons Ca : valence electrons Br : core electrons Br : valence electrons

What do the lines around the finger of the doorknob represent?

Identify what type of reaction is below. Also determine what coefficients that would balance the chemical equation.

Much of life on Earth is based in aquatic biomes. What property of water allows life to survive in liquid water?