Families 1-2 and 13-18 are called the... A. transition elements.
B. radioactive elements.
C. representative elements.
D. rare earth elements.

C. representative elements.

Explanation:

Families 1 - 2 and 13 - 18 are called representative elements or often times, main group elements.

hi my dude or dudette

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.