EVALUACIÓN - 2DO GRADO
Quiz
•
Chemistry
•
2nd Grade
•
Hard
Alvaro Breibat Choque
Used 3+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Calcula el numero de masa de un catión divalente que posee 25 electrones y 8 neutrones.
33
35
30
38
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Determina el número total de neutrones de los siguientes átomos:
42
24
56
43
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
El átomo con número atómico 23 y número de masa 58 esta formado por:
58p+ y 81n
32p+ y 36n
23p+ y 35n
35n y 58p+
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Si en un átomo neutro el numero de masa es 68 y el numero de neutrones es 4 unidades mas que el numero de protones. Calcula en numero atómico de dicho átomo.
32
64
68
23
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Halla la masa atómica de un anión trivalente que tiene 37 electrones y 53 neutrones.
87
34
78
43
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