The element in group 1 of the periodic table that had the smallest atomic radius is A. Lithium.
Leading zeros
Captive zeros
Trailing zeros
The answer is O2.
The ionic charge of something can be determined by it's place in the periodic table.
The melting of the ice cube indicates physical change has taken place
37.8 g CH2Br2 X (1 mol CH2Br2 / 173.83 g) = 4.60X10^-3 mol CH2Br2
<span>4.60X10^-3 mol CH2Br2 X (2 mol Br / 1 mol CH2Br2) X 6.02X10^23 atoms/mol = 5.54X10^21 bromine atoms</span>
