An atom has 24 protons and 12 neutrons. What is the chemical symbol for the atom? 10points?

Chlorine is made up of 75.78% ^35Cl and 24.22% ^37Cl. The atomic mass of ^35Cl is 34.969 amu. The atomic mass of ^37Cl is 36.966 amu. What is the average atomic mass of a sample of chlorine?

c 35.968 amu (add the 2 together and divide by 2)

An atom has 24 protons and 12 neutrons. What is the chemical symbol for the atom? Consult the periodic table.

b Cr (protons equal the atomic number, so it is 14 which is Chromium)

An atom has an atomic number of 32. What is the chemical symbol for the atom? Consult the periodic table.

c Ge

An atom of beryllium (Be) has 4 protons. How many electrons must it have if it has a net charge of 0?

c 4 (protons have a positive charge and electrons have a negative charge so they cancel each other out)

They differ Atoms exists in a range of different masses these are called isotopes Carbon 12 has 6 protons and 6 neutrons Carbon 13 has 6 protons and 7 neurons Carbon 14 has 6 protons and 8 neutrons So sometimes the number of protons= the neutron number but this is not always the case. The number of protons in a nucleus of an element stays the same what differs is the number of neutrons

If you had time to do all these, you would have had time to google and look for an answer yourself. Stop using yahoo answers to do your homework please.