Question

1. the region of space with the highest probability of finding an electron is called a(n) mark only one oval. spin quantum number nucleus orbital isotope 10. as the energy level increases in an atoms orbitals, the average distance of electrons from the nucleus mark only one oval. increases decreases stays the same none of these 11. the elements chlorine and iodine have similar chemical properties because they mark only one oval. are both metals are in the same period have the same number of valence electrons have the same number of isotopes 12. the alkali metals have how many valence electrons? mark only one oval. 8 7 1 2

Explanation:

1. An orbital is defined as the region of space with the highest probability of finding an electron.
2. As the energy level increases, the average distance of an atom's electrons from the nucleus increases.
3. Chlorine and iodine have similar chemical properties because they have the same number of valence electrons. They are non - metals and in the same group, not the same period.
4. Alkali metals have 1 valence electron.

Answer:

1. orbital
2. increases
3. have the same number of valence electrons
4. 1