Answer:
It can help to have experts
Explanation:
I got the question correct
Answer:
the element must be in the fifth, sixth, or seventh energy shells.
Explanation:
Because the first ionization energy is less than calcium's, the element must be larger and in the next energy shell. Calcium is in the fourth energy shell, so the element must be in the fifth, sixth, or seventh energy shells.
To begin with you must be 16 or 17 years old. You have to be able to support yourself , live on your own and manage your own affairs.
