ddesravines ddesravines

03-02-2017
Chemistry

contestada

When a radioactive atom emits an alpha particle, the original atom's atomic number decreases by four.

Respuesta :

yashddsy26 yashddsy26

03-02-2017

Ya it is true, alpha particle is actually helium atom with no electrons !
He2+ and it has mass of 4 u ....So that is correct !

Answer Link

Otras preguntas

Which statement explains this rise in the number of U.S. troops in Vietnam during the 1960s? During the 1960s, several Communist controlled nations joined the V

what is three fiths of 45

What are the square roots of 324? A. 162 and –162 B. 19 and –19 C. 18 and –18 D. 16 and –16

Use the histograms to answer the question. How many more teenagers than adults have at least 600 songs on their music players?

Is there a relationship between an elements atomic number and its first ionization energy (IE)?

is energy released or absorbed during the formation of a solution?

MC)The table below shows the number of immigrants to the United States from different regions of Europe between 1871 and 1910: European Immigration Northern/Wes

what is a system for mapping around earth on a flat surface called

Who was the first woman to fly across the Atlantic Ocean? Eleanor Roosevelt Sonia Sotomayor Amelia Earhart Zora Neale Hurston

In Roman times most people lived in small cities, while during the Middle Ages most people lived in the countryside. All of the following are reasons for this c