Question

3. Draw Lewis symbols or structures for the following atoms, ions, or compounds. (a) Cs (b) MgCl2 (c) Se (d) CN- (e) P? 1. Identify polar covalent bonds or ionic bonds formed in the binary compounds below. (a) C and S (b) Al and CI (c) C and o (d) Ca and o Calcollowing molecules and

Answer 1

a Lewis symbols or structures cst - ce - elehonic configuration - [Xe] 68² lewin dot diagram - •cs a wnfiguration [Xe]6s1 [xel T XMg = 12 3 )2 DX = 30-12 valence Valcoce electron in electron in i electronegatiil Mg = -26 J-ty cla Te Xci = 3.0 = 1.8 so it form ionic Compound cli Mg: •Cli it donate one elechon Mach form ionic each of chluine so forma bond ion to a ko [Mg3+ 2[:ci:] lewin atructure of Macle is = [Mg] 2 : 1:]

ro Se for - Valenu electron configuration relenium = 48² 404 so there is sin elechon dewix structure de: @ CN c N hax valence clechon is 4. (18² 28² 28² ) har valena elechon & Sé (18²28² 2837 one negative charge to = 16 a. Totul elechun aloe lewin clot structure [:CEN] (0 p3- - P = [NC] 38² 383 - P: - p3. => so electronic configuration of. [Ne] 35² 3p6 = 10 lewin dot structure of pa- 3-

4 or Ionic bond Identify Identify po polar covalent bund i as c and so 7. of carbon electronegativity > 6 - 2.5 S => 2.5 elechinegativity difference = 2000 to it form non-polar covalent bond and Al 1.5 cu 3.0 it SEN DEN form =) = - X = 3.0 -1.5 -1.5 polar uvalent bund 0.4 - covalent 0.5-1.7 polar crolent morthan 1.7 Tonic wm/round C and o 2.5 3.5 DEN = 3.5-2.5 = 1.0 - so it form bond polar curclent ca 1.0 and o 35 DEN = 3.5-10 = 2.5. no it form Ionic compound mon than 17.