lolor2738 lolor2738

15-09-2020
Chemistry

contestada

Question 11
1 pts
If a calcium atom has 20 protons, 21 neutrons, and 20 electrons, what is its atomic
number?
40
0 21
O 20
41

Respuesta :

yanetinl0l528 yanetinl0l528

15-09-2020

20, periodic table will reveal to you that calcium has a atomic number of 20.

Answer Link

Otras preguntas

What is equivalent to 3/5 in fraction

What is 4 7/8 written as an improper fraction?

Why did the U.S. and Allied forces invade Afghanistan after 9/11? A. They knew the Taliban was responsible for the attacks. B. They knew the Ba'ath Party was re

Which words in the sentence are the complete noun clause? My younger brother complains about whatever is on his plate. A. Whatever is on his plate B. My younge

How do you Increase 120 by 24%

what type of consumer is a spider monkey

In the 1760s, Americans in the original thirteen British colonies began to protest against efforts by the king to extend voting rights to women laws passed by

What was the most important result of the Land Ordinance of 1785?

2 step equation that equals 10

A solution is a A. combination of isotopes. B. chemical reaction. C. mixture in which the substances are evenly spread out. D. mixture in which undissolved s