Yusra1901 Yusra1901

20-10-2016
Chemistry

contestada

HELP!
An atom of beryllium has an atomic number and a mass number of 9.

Describe the numbers and arrangements of the protons, neutrons and electrons in this atom.

Respuesta :

20-10-2016

I did a project on berylium and I am happy to help! Beryllium has 4 protons and 5 neutrons. It also has 2 electrons

Answer Link

Otras preguntas

compound weighing 115 g contains 68.3 g of carbon, 13.2 g of hydrogen, 15.9 g of nitrogen, and some amount of oxygen. What is the mass percent of oxygen in the

What was a major result in the Civil War?

A 3 by 4 rectangle is inscribed in circle. What is the circumference of the circle? a. 2.5π b. 3π c. 5π d. 4π e. 10π

Compare the Sepoy Rebellion in India and the Boxer Rebellion in China.

Kira walks 8 1/2 block in 17 minutes . If Kira continues to walk at a steady pace,how many block will she walk each munite?

which statement best describes Aztec civilization at the time of the encounter

which of the following is something to check for during the proofreading process?

In the twentieth century, external migration patterns were usually (A) from rural to urban areas. (B) from urban to rural areas. (C) from developed to developin

What causes mountain ranges to form?

Maria walked 3 km west and 4 km south . calculate how far she is from her starting point.

ACCESS MORE