Answer:
Odd couple. Surprisingly, the team found evidence for isotopes of aluminium (which has 13 protons) with both 29 and 30 neutrons.copper
For April, we have selected copper, a transition metal with chemical symbol Cu and atomic number 29.
Atomic Number19Atomic Mass39.0983 atomic mass unitsNumber of Protons19Number of Neutrons
copper
An isotope of copper contains 29 electrons, 29 protons, and 36 neutrons.
There must be 14 neutrons is a typical stable atom of aluminum.
As the fetus develops inside a woman's uterus, another vital structure is in place to provide a vital service to mother and child: the placenta. It is a spongy structure, filled with blood vessels that come from the mother by way of the lining of the uterus, and then connects with the baby by the umbilical cord
Answer:
It is the distance that light travels in a year.
Explanation:
ASTRONOMY
a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 trillion miles).
True i hope this helps you