Question

1)Determine the number of valence electrons for each of the atoms. Enter each answer as a numeral. For example, if an atom has two valence electrons, enter the number 2. (Li, CI, Al, Ne)

2) Identify the number of core and valence electrons for each atom. Ra: Core electrons and Valence Electrons

Answer 1

core electrons: the electrons that in an atom and do not are not valence electrons participate in bonding ① Li=3= wh rs valence electrons = 1 core electrons = 2 c/= 17:15 25² zp6 35² 385 valence electrons =7 v valence core electrons = 10 Al: 13=15 25² 2p6 38² 3pl valence electrons =3√ core electrons = 10 Ne = 10 =182252 2p 6 Valence electrons = 8 coreelectrons 22 ② Raz 88= 15 25 286 35 36 265² 32 10 4poss? red 10 5p6 65² 4614 500 6p6252 valence electrons = 2 core electrons = 86