What do atoms of elements in a group have that makes their properties similar? A. the same atomic mass B. the same number of protons
C. the same number of outer level electrons
D. the same total number of electrons

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.

answercollision;