# பங்கீட்டு ஆரை

**பங்கீட்டு ஆரை** (ஆங்கிலம்: covalent radius), *r*<sub>cov</sub>,சகப் பிணைப்பில் உள்ள அணுவின் ஆரையினை அளப்பதற்காகப் பயன்படுத்தப்படுகிறது . இது பிகோமீட்டர்கள் (பி.மீ.) அல்லது ஆங்ஸ்டிராம்களில் (Å) அளக்கப்படுகிறது, 1&nbsp;Å&nbsp;= 100&nbsp;பி.மீ.  
**பிகோ மீட்டரில் பங்கீட்டு ஆரைகள்.**  
| H | &nbsp; | He |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | &nbsp; | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 31(5) | &nbsp; | 28 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Li | Be | &nbsp; | B | C | N | O | F | Ne |  |  |  |  |  |  |  |  |  |  |
| 3 | 4 | &nbsp; | 5 | 6 | 7 | 8 | 9 | 10 |  |  |  |  |  |  |  |  |  |  |
| 128(7) | 96(3) | &nbsp; | 84(3) | sp<sup>3</sup> 76(1)<p>sp<sup>2</sup> 73(2)</p><p>sp &nbsp;69(1)</p> | 71(1) | 66(2) | 57(3) | 58 |  |  |  |  |  |  |  |  |  |  |
| Na | Mg | &nbsp; | Al | Si | P | S | Cl | Ar |  |  |  |  |  |  |  |  |  |  |
| 11 | 12 | &nbsp; | 13 | 14 | 15 | 16 | 17 | 18 |  |  |  |  |  |  |  |  |  |  |
| 166(9) | 141(7) | &nbsp; | 121(4) | 111(2) | 107(3) | 105(3) | 102(4) | 106(10) |  |  |  |  |  |  |  |  |  |  |
| K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | Ga | Ge | As | Se | Br | Kr |  |
| 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 |  |
| 203(12) | 176(10) | 170(7) | 160(8) | 153(8) | 139(5) | l.s. 139(5)<p>h.s. 161(8)</p> | l.s. 132(3)<p>h.s. 152(6) | l.s. 126(3)<p>h.s. 150(7) | 124(4) | 132(4) | 122(4) | 122(3) | 120(4) | 119(4) | 120(4) | 120(3) | 116(4) |  |
| Rb | Sr | Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd | Ag | Cd | In | Sn | Sb | Te | I | Xe |  |
| 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 |  |
| 220(9) | 195(10) | 190(7) | 175(7) | 164(6) | 154(5) | 147(7) | 146(7) | 142(7) | 139(6) | 145(5) | 144(9) | 142(5) | 139(4) | 139(5) | 138(4) | 139(3) | 140(9) |  |
| Cs | Ba | La | Lu | Hf | Ta | W | Re | Os | Ir | Pt | Au | Hg | Tl | Pb | Bi | Po | At | Rn |
| 55 | 56 | &nbsp; | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 |
| 244(11) | 215(11) | &nbsp; | 187(8) | 175(10) | 170(8) | 162(7) | 151(7) | 144(4) | 141(6) | 136(5) | 136(6) | 132(5) | 145(7) | 146(5) | 148(4) | 140(4) | 150 | 150 |
| Fr | Ra | Ac |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 87 | 88 | &nbsp; |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 260 | 221(2) | &nbsp; |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| &nbsp; |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| &nbsp; | La | Ce | Pr | Nd | Pm | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb |  |  |  |  |
| &nbsp; | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 |  |  |  |  |
| &nbsp; | 207(8) | 204(9) | 203(7) | 201(6) | 199 | 198(8) | 198(6) | 196(6) | 194(5) | 192(7) | 192(7) | 189(6) | 190(10) | 187(8) |  |  |  |  |
| &nbsp; | Ac | Th | Pa | U | Np | Pu | Am | Cm |  |  |  |  |  |  |  |  |  |  |
| &nbsp; | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 |  |  |  |  |  |  |  |  |  |  |
| &nbsp; | 215 | 206(6) | 200 | 196(7) | 190(1) | 187(1) | 180(6) | 169(3) | } |  |  |  |  |  |  |  |  |  |  
**பல்வேறு பங்கீட்டு ஆரைகள்.**  
| H | &nbsp; | He |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | &nbsp; | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 32
-
- | &nbsp; | 46
-
- |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Li | Be | &nbsp; | B | C | N | O | F | Ne |  |  |  |  |  |  |  |  |  |  |
| 3 | 4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Radius / pm: | 5 | 6 | 7 | 8 | 9 | 10 |  |  |  |  |  |  |  |  |  |  |
| 133
124
- | 102
90
85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;single
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;double
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;triple | 85
78
73 | 75
67
60 | 71
60
54 | 63
57
53 | 64
59
53 | 67
96
- |  |  |  |  |  |  |  |  |  |  |
| Na | Mg | &nbsp; | Al | Si | P | S | Cl | Ar |  |  |  |  |  |  |  |  |  |  |
| 11 | 12 | &nbsp; | 13 | 14 | 15 | 16 | 17 | 18 |  |  |  |  |  |  |  |  |  |  |
| 155
160
- | 139
132
127 | &nbsp; | 126
113
111 | 116
107
102 | 111
102
94 | 103
94
95 | 99
95
93 | 96
107
96 |  |  |  |  |  |  |  |  |  |  |
| K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | Ga | Ge | As | Se | Br | Kr |  |
| 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 |  |
| 196
193
- | 171
147
133 | 148
116
114 | 136
117
108 | 134
112
106 | 122
111
103 | 119
105
103 | 116
109
102 | 111
103
96 | 110
101
101 | 112
115
120 | 118
120
- | 124
117
121 | 121
111
114 | 121
114
106 | 116
107
107 | 114
109
110 | 117
121
108 |  |
| Rb | Sr | Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd | Ag | Cd | In | Sn | Sb | Te | I | Xe |  |
| 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 |  |
| 210
202
- | 185
157
139 | 163
130
124 | 154
127
121 | 147
125
116 | 138
121
113 | 128
120
110 | 125
114
103 | 125
110
106 | 120
117
112 | 128
139
137 | 136
144
- | 142
136
146 | 140
130
132 | 140
133
127 | 136
128
121 | 133
129
125 | 131
135
122 |  |
| Cs | Ba | La-Yb | Lu | Hf | Ta | W | Re | Os | Ir | Pt | Au | Hg | Tl | Pb | Bi | Po | At | Rn |
| 55 | 56 | &nbsp; | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 |
| 232
209
- | 196
161
149 | &nbsp; | 162
131
131 | 152
128
122 | 146
126
119 | 137
120
115 | 131
119
110 | 129
116
109 | 122
115
107 | 123
112
110 | 124
121
123 | 133
142
- | 144
142
150 | 144
135
137 | 151
141
135 | 145
135
129 | 147
138
138 | 142
145
133 |
| Fr | Ra | Ac-No | Lr | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Uut | Fl | Uup | Lv | Uus | Uuo |
| 87 | 88 | &nbsp; | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 |
| 223
218
- | 201
173
159 | &nbsp; | 161
141
- | 157
140
131 | 149
136
126 | 143
128
121 | 141
128
119 | 134
125
118 | 129
125
113 | 128
116
112 | 121
116
118 | 122
137
130 | 136
-
- | 143
-
- | 162
-
- | 175
-
- | 165
-
- | 157
-
- |
| &nbsp; |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| &nbsp; | La | Ce | Pr | Nd | Pm | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb |  |  |  |  |
| &nbsp; | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 |  |  |  |  |
| &nbsp; | 180
139
139 | 163
137
131 | 176
138
128 | 174
137 | 173
135 | 172
134 | 168
134 | 169
135
132 | 168
135 | 167
133 | 166
133 | 165
133 | 164
131 | 170
129 |  |  |  |  |
| &nbsp; | Ac | Th | Pa | U | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No |  |  |  |  |
| &nbsp; | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 |  |  |  |  |
| &nbsp; | 186
153
140 | 175
143
136 | 169
138
129 | 170
134
118 | 171
136
116 | 172
135 | 166
135 | 166
136 | 168
139 | 168
140 | 165
140 | 167 | 173
139 | 176 | } |  |  |  |