The number of particles (molecules or atoms) is: 6.022 x 10²³ particles (atoms or molecules).
1 mol of H₂O has 6.022 x 10²³ molecules.
1 mol of Al has 6.022 x 10²³ atoms.
<span>4 C3H5(NO3)3 = 12 CO2 + 6 N2 + 10 H2O + O<span>2
That's the answer lovely~</span></span>
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
Answer:
14
Explanation:
Silicon has atomic number 14, so its nucleus contains 14 protons
no. of protons + no. of neutrons = atomic mass number
p + n = A
14 + n = 28
n = 28 - 14 = 14
An atom of Si-28 contains 14 neutrons.