Select the group of the periodic table containing some elements with a condensed electron configuration of [X]ns2(n-1)dnp. Period Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display MAIN-GROUP ELEMENTS Metals (main-group) Metals (transition) MAIN-GROUP ELEMENTS Metals (inner transition). - 1A (1) 1 H 2A 1.008 (2) 3 4 2 LI Be Metalloids Nonmetals 8A (18) 2 ЗА 4A 5A 6A 7A He (13) (14) (15) (16) (17) 4.003 5 6 7 8 9 10 B C N F Ne 6.941 9.012 10.81 12.01 14.01 16.00 19.00 20.18 11 12 TRANSITION ELEMENTS 13 14 15 16 " w 3 Na Mg 38 4B 5B 68 7B 8B- 1B 2B AI Si P S 22.99 24.31 (3) (4) (5) (6) (7) (8) (9) (10) (11) 19 20 21 22 23 24 25 26 27 28 29 (12) 26.98 31 28.09 30.97 32.07 17 18 CI Ar 35.45 39.95 K Ca Sc Ti V Cr Mn Fe Co Ni 37 38 40 41 42 Zr Nb Mo 95.94 55 56 57 6 Cs Ba La 73 74 W 183.9 104 105 106 7 39.10 40.08 44.96 47.88 50.94 52.00 54.94 55.85 39 5 Rb Sr Y 85.47 87.62 88.91 91.22 92.91 72 Hf Ta 132.9 137.3 138.9 178.5 180.9 87 88 89 Fr Ra Ac Rf Db Sg (223) (226) (227) (263) (262) (266) (267) (277) (268) (281) 272) (285) 58.93 58.69 43 Tc (98) 44 45 46 Ru Rh Pd 101.1 102.9 106.4 47 48 49 75 76 77 78 79 Re Os Ir Pt Au 186.2 190.2 192.2 195.1 82 Hg TI Pb 97.0 200.6 204.4 207.2 209.0 107 108 109 110 111 112 Bh Hs Mt Ds Ag Cd In 07.9 112.4 114.8 80 30 32 33 34 35 36 Cu Zn Ga Ge As Se Br Kr 3.55 65.41 69.72 72.61 74.92 78.96 79.90 83.80 50 51 52 53 Sn Sb Te 1 Xe 118.7 121.8 127.6 126.9 131.3 54 81 83 Bi 84 85 86 Po At Rn (209) (210) (222) 114 116 (289) (292) INNER TRANSITION ELEMENTS 58 6 Lanthanides Ce 7 Actinides 59 60 61 Pr Nd Pm 140.1 140.9 144.2 (145) 90 91 92 93 Th Pa U Np 232.0 (231) 238.0 (237) 98 62 63 64 65 66 67 69 70 Sm Gd Tb Dy Ho Er Tm Yb Lu 150.4 152.0 157.3 158.9 162.5 164.9 167.3 168.9 173.0 175.0 94 95 96 97 99 100 101 102 103 Pu Am Cm Bk Cf Es Fm Md No Lr (242) (243) (247) (247) (251) (252) (257) (258) (259) (260) 68 71
Formal Charges
Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be neutral atoms.
Polarity Of Water
In simple chemical terms, polarity refers to the separation of charges in a chemical species leading into formation of two polar ends which are positively charged end and negatively charged end. Polarity in any molecule occurs due to the differences in the electronegativities of the bonded atoms. Water, as we all know has two hydrogen atoms bonded to an oxygen atom. As oxygen is more electronegative than hydrogen thus, there exists polarity in the bonds which is why water is known as a polar solvent.
Valence Bond Theory Vbt
Valence bond theory (VBT) in simple terms explains how individual atomic orbitals with an unpaired electron each, come close to each other and overlap to form a molecular orbital giving a covalent bond. It gives a quantum mechanical approach to the formation of covalent bonds with the help of wavefunctions using attractive and repulsive energies when two atoms are brought from infinity to their internuclear distance.
Step by step
Solved in 3 steps with 3 images