Question

Si un elemento tiene número atómico 79 y número de masa 196,97. ¿Cuántos electrones tiene y que elemento es?

Answer 1

Respuesta:

1. Which is a signal word for simple present?

a. now b. last Monday c. often

2. Which is a signal word for simple present?

a. sometimes b. at the moment c. yesterday

3. Which is a signal word for simple present?

a. last Friday b. every Friday c. next Friday

4. Which is not a signal word for simple present?

a. never b. already c. usually

5. Which is not a signal word for simple present?

a. Listen! b. first ... then … c. seldom

Answer 2

Respuesta:

79 protones y 118 neutrones