What is the electron configuration called that has 18 electrons in the outer energy level and all of the orbitals filled?

Noble gas configuration

The formal procedure for taking equipment out of service and ensuring it cannot be operated until an unauthorized person has returned it to service is

A chemist requires 3.0 liters of 0.12 M H2SO4 solution. How many grams of H. SO4 should the chemist dissolve in the water?

A 11.0 kg iron weightlifting plate has a volume of 1400 cm3. What is the density of the iron plate in g/cm3?

Neutralization Reaction HNO3 + NaOH predict the products (so do double replacement reaction) and balance them

I'm working on a P1V1=P2V2 problem. I have all the information in and is has equaled 146.686235. Would I round this to 147 or 146.69 or neither?

List two non-SI units for volume, and explain how they relate to the cubic centimeter.

G which atomic orbitals overlap to form the carbon-carbon σ bonding molecular orbital of acetylene, c2h2?

Where did the earth hold most of its original water

Giovanni created this chart to study for an exam. A 2-column table titled common ionic compounds. The first column labeled compound has entries sodium hydroxide (N a O H), iron oxide (F e O), calcium chloride (C a C l subscript 2), calcium carbonate

Consider the two electron arrangements for neutral atoms A and B. What is the difference between atom A and atom B? A - 1s22s22p63s1 B - 1s22s22p65s1 Atom B has lost some inner electrons.