<span>The </span>elements are arranged<span> in order of increasing atomic number. Vertical columns(called groups) contain </span>elements with similar properties. Horizontal rows called periods elements with<span> the same number of atomic orbitals(That's why Hydrogen and Helium are separated from the rest of the table).
Hope this helps:)</span>
1. b
2.a
3.c
I think . hope I get it right
It is A) 1,482 cm3 ..............
Molarity is a concentration unit, defined to be the number of moles of solute divided by the number of liters of solution.
<span>that it is cooler than the lithosphere.</span>
