What property of an element does the atomic number represent?

A. the mass of the atom

B. the size of the atom

C. the number of protons in the atom

D. the number of neutrons in an atom

2nh4cl molecules are formed. in total, how many atoms of each element do these two molecules contain? explain.

Which element is paired with an excited-state electron configuration for an atom of the element? (1) Ca: 2-8-8-2 (2) Na: 2-8-2 (3) K: 2-6-8-3 (4) F: 2-8

What is the least reactive group on the periodic table?

Which of these is true of the Earth system? a. Energy rarely enters or leaves the system. b. Matter rarely enters or leaves the system. c. Matter easily enters the system but cannot leave the system. d.

All systems have. A. Output and feedback. B. Process and function. C. input, process, and sensors.

What do Lewis dot structures show?

300 grams of a compound which contains only carbon, hydrogen and oxygen is analyzed and found to contain the exact same percentage of carbon as it has oxygen. The percentage of hydrogen is known to be 5.98823%.

What element has the electron arrangement 2,8,4?

If you get pregnant in Dec how long will it take for u to get to second trimester

Name the following compound HClO