Átomo
9th Grade
•6 Qs
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Átomo
Quiz
•
Science, Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Cristian Ferreira
Used 5+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
El número de protones, neutrones y electrones constituyen datos importantes para caracterizar un átomo. Al respecto ¿Cuál de las siguientes afirmaciones es correcta?
Número atómico (Z), es el número de neutrones existentes de un átomo.
Número másico (A), es la suma de electrones y neutrones existentes de un átomo.
Número atómico (Z), es el número de protones existentes de un átomo.
Número másico (A), es el número de electrones existentes de un átomo.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cuando un elemento químico se encuentra cargado positivamente, decimos que se trata de un:
Catión
Anión
Neutrón
Positrón
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Un átomo neutro presenta 22 electrones y 26 neutrones, su número atómico (Z) y número másico (A) son, respectivamente:
22 y 26
22 y 48
26 y 22
26 y 48
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuál es el número de electrones presentes en el ion 2311Na+?
10
11
12
23
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuántos electrones presenta el ion 199F - ?
9
10
11
19
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
El número de electrones presentes en un ion X 5+ con un valor Z = 20 y A = 10
10
15
20
25
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