7) No since in third energy level there are 3 different subenergy levels (s, p, d) therefore no |
7) No since in third energy level there are 3 different subenergy levels (s, p, d) therefore 8) atoms of the same element different by mass (# of mass). Carbon-13, C-13, 136C. 9) #n= Mass number - Atomic number 10) Atomic Number 11) Electron in the highest energy level. Column column L to R not including "d" & "f" blocks. Part II 1) ( As 33e-) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3 [5 valence electron] 2) (Bi 83e-) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3 [5 valence electron] 3) (Cs 55e-) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1 [1 valence electron] Part II (2nd one) Note: p+ - proton, e- - electron, n0 - neutrons a) Ca-42 (Calcium-42), 20p+, 20e-, 22n0 b) C-13 (Carbon-13), 6p+, 6e-, 7n0 c) U-238 (Uranium-238), 92p+, 92e-, 146n0 Part III See Atomic mass table for actual atomic mass. |