The atomic mass of the most common isotope of carbon is
the element with an atomic number of 4 is
exist in orbitals around the nucleus.
oxygen has protons in the nucleus.
an isotope of an element has the same number of protons but a different number of

Isotopes differ in number of neutrons.

Carbon is an element found in group 14 of the periodic table. It's common atomic number is 12. It also has other isotopes.

The element that has atomic number 4 is Beryllium. The electrons in an atom exist in orbitals around the nucleus.

Oxygen has eight protons in its nucleus. An isotope has a different number of neutrons.

Learn more about isotopes: link

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."