paramamark9538 paramamark9538

25-08-2022
Chemistry

contestada

Beryllium has an atomic number of 4. How many neutrons does the isotope beryllium-9 have?.

Respuesta :

egled1997 egled1997

25-08-2022

Answer: 5 neutrons

Explanation:

atomic number - number of protons in the nucleus

beryllium has mass number 9

mass number = number of protons + number of neutrons

9 = 4 + number of neutrons

number of neutrons = 9-4 = 5

Answer Link

Otras preguntas

mga programa ni Manuel A. Roxas

How did the idea of joining together as one big Canada in the 1850s affect the different groups and places involved? What were the challenges and dreams of thos

In three to four sentences, describe the plant and animal life found in the rainforest.

What are the solutions to the equation (2x – 5)(3x – 1) =

Which of the following questions is a conflict theorist MOST likely to ask?a) How is Social Order possible?b) How do meanings change over time?c) How does a soc

Graph the polynomial function f(x) = x(x−7)(x+7)

The length of the longer base of an isoceles trapizoid is 12 cm. the length of each side is 5 cm. the mesure of each acute angle is 37. find the length of the s

A short piece of fiction that is a "bite size" version of a novel.a. lyric poem b. essay c. dramatic poem d. short story

what role does the letter have in the play A matter of husband?

Q1. The diagram shows two resistors connected to a battery. The current in different parts of the circuit is indicated. What is the current at point P? 6.0A 2.0