Untitled Flashcards
Flashcard
•
Science
•
8th Grade
•
Hard
Iliana ANAMPA
Used 1+ times
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10 questions
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1.
FLASHCARD QUESTION
Front
El nùmero de masa se obtiene:
Back
sumando protón más neutrón
2.
FLASHCARD QUESTION
Front
En un átomo, el número de masa es a su número de protones como 7 es a 2. Determiné el número de electrones de su catión di positivo si posee 40 neutrones.
Back
14
3.
FLASHCARD QUESTION
Front
Un ion con carga +3 tiene 26 protones y 30 neutrones. ¿Cuál es su símbolo nuclear?
Back
Fe
4.
FLASHCARD QUESTION
Front
¿Cuál es el número atómico de un átomo que tiene 18 electrones y 22 neutrones, si es neutro?
Back
18
5.
FLASHCARD QUESTION
Front
Son isótopos de un elemento aquellos átomos que tienen:
a) Igual número de protones y neutrones.
b) Igual número atómico pero distinto número de electrones.
c) Igual número atómico pero distinto peso atómico.
d) Igual número de neutrones pero distinto número de protones.
e) Ninguna de las anteriores es correcta.
Back
Respuesta: b
6.
FLASHCARD QUESTION
Front
El anión monovalente cuyo número de masa 35 , posee igual neutrones y electrones. Hallar protones.
Back
17
7.
FLASHCARD QUESTION
Front
El catión divalente presenta 36 e- y 38 nª, Calcular la masa
Back
76
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