Which of the following electron configurations is correct?

a. Sc, 1s22s22p63s23p64d14s2

b. Cl, 1s22s22p63s23p5

c. Ca, 1s22s22p63s23p63d2

In grams which is the most accurate description of the mass ratio of hydrogen to oxygen when they chemically combine to form water? A: 8:1 always B. 1:8 always C: 1:8 sometimes

Describe the reaction of a weak acid and a strong base. In general, what will the final pH be when the reaction between equal moles of a weak acid and a strong base is complete?

What volume would 3 moles of hydrogen gas occupy at stp?

Unscramble the following words to form a complete sentence about the cycles of nature: limited is through environment Matter recycled the on Earth is and

A rubber ball contains 5.70*10⁻¹ dm³ of gas at a pressure of 1.05 atm. What volume will the gas occupy at 7.47 atm?

Which of the following radioactive emissions is the least penetrating, aloha particles, beta particles or gamma rays

The three major groups p On the periodic table are the

Which of the following has the greatest mass, in grams? a. 1 atom of lead (Pb) b. 0.5 mol copper (Cu) atoms c. 0.3 mol gold (Au) atoms d. 25 atoms of mercury (Hg)

Which one is not a sedimentery rock a.) sandstone b.) limestone c.) quartz d. (coal

Which group is more reactive than the alkaline earth metals?