Expansion of the valence shell to accommodate more than eight electrons is possible with

iron would move it is magnetic there is a mag field around the current in the wire

no. dot product   =0 when vecs at right angles

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.