babycakez2285 babycakez2285

20-10-2017
Chemistry

contestada

If a potassium atom has an atomic number of 19 and a mass number of 39, how many protons, electrons, and neutrons are in the atom?

Respuesta :

ejelonubenedict ejelonubenedict

20-10-2017

proton number = atomic number = 19
electron number = proton number | for a neutral atom = 19
neutrons = mass number-atomic number
= 39-19 = 20

Answer Link

Otras preguntas

How does distance affect the strength of the force of gravity ?

what type of graph represents the sequence given by the explicit formula an = 5 + (n-1)2? A) A linear graph that passes through the point (3, 0) B) An exponenti

The scale of a map is 1 inch: 250 miles. City A is 378 miles from City B. To the nearest tenth, how far is its distance on the map? Show your work. Explain.

A patio in the shape of a semicircle has a diameter of 21 ft. What is the approximate area of the patio, rounded to the nearest square foot? Use 3.14 to approxi

he made a queen size quilt that was 8 ft long. it's area was 64 square feet. what is the perimeter?

What company was responsible for Love Canal?

What is a phenomenon characterized by poorly planned development on the edges of cities and towns.

Which ocean borders the northeast region

how did bushido affect modern japanese culture

What is the mean of the data set? 14, 19, 18, 12, 22, 15, 16, 16, 14, 14, 21, 20 A. 16.00 B. 19.50 C. 15.75 D. 16.75