
Química 3er examen regular
Authored by Helí Gonzales
Chemistry
11th - 12th Grade
Used 12+ times

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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuántos enlaces pi y sigma hay en la molécula de tetracianoetileno, respectivamente?
9 y 9
0 y 18
13 y 9
9 y 0
5 y 4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La geometría de una molécula que tiene un par libre y un átomo central con 3 pares de electrones enlazantes, se denomina
Plana trigonal
Cuadrangular
Bipiramidal trigonal
Tetraédrica
Piramidal trigonal
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Completar el espacio en blanco:
Para formar un enlace pi, dos orbitales ____ puros se traslapan lateralmente
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuáles de las siguientes moléculas forma puente de hidrógeno al unirse entre sí?
C3H8
NaCl
HBr
CH3COCH3
NH3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La sustancia con menor punto de ebullición, es:
K2S
CaSe
H2S
MgO
KBr
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El par de moléculas en donde se forma puente de hidrógeno:
HF – CH4
HCl - HCl
H2O – CH3NH2
CH4 – H2O
CH3Cl – NH3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Indique lo incorrecto respecto a las propiedades del carbono en los compuestos orgánicos:
Se une a otro átomo mediante enlace covalente.
Se une a otro átomo de carbono mediante enlace simple, doble o triple
Solamente presenta hibridación sp3 y sp2
Es tetravalente, porque se enlaza con sus 4 electrones de valencia
Forma enlace sigma con otros átomos
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