B- Earth completes a full spin on its axis once every 24 hours.
Answer:
The nucleus consists of 25 protons (red) and 30 neutrons (blue). 25 electrons (green) bind to the nucleus, successively occupying available electron shells (rings). Manganese is a transition metal in group 7, period 4, and the d-block of the periodic table. It has a melting point of 1246 degrees Celsius.
Calcium is stored in bones in the body
Amm=(%of a × mass of a + %of b ×mass of b +%of c × mass of c)/100
