![rexerlkman4145](/avatars/37602.jpg)
rexerlkman4145
11.11.2020 •
History
What is the composition of an isotope of calcium (atomic number 20)?
Solved
Show answers
More tips
- O Other Everything You Need to Know About Kudyabliks...
- C Computers and Internet The Twitter Phenomenon: What it is and How to Use it...
- C Computers and Internet How to Choose a Laptop: Expert Guide and Tips...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
Answers on questions: History
- H History Paper 9 begins by stating we the aristocratic party of the united states. why would anti-federalists write from the point of view of the aristocrats supposed contempt...
- H History Which dimension did katharine cook briggs and isabel briggs myers add to carl jung’s type theory of personality when they developed the mbti? a. introversion-extroversion...
- H History Who was the first explorer to circumnavigate the earth? a) vasco da gama b) bartolomeu dias c) ferdinand magellan d) christopher columbus...
- H History Who was able to vote for an elected official of the virginia house of burgesses?...
- H History Who did queen isabella and king ferdinand force out of spain in the late 15th century? a) the moors b) the french c) the british d) the mongols...
- H History Columbus impression of natives in the americans...
- H History Which of the following is not a reason that a colony would become a royal colony?...
- H History What do we honor the america flag for...
- H History The blank empire was the earliest founded of the ancient middle eastern civilizations....
- H History Before a case can be heard in a state high court, it must go through a jury trial. go through a selection process. be decided by a panel of judges. be decided by...
Ответ:
The answer to your question is: last option.
20 protons
20 electrons
25 neutrons
Explanation:
Data
Calcium, atomic number 20
Atomic number indicates the number of protons in an element, so, if Calcium's atomic number is 20, it means that it has 20 protons.
In a neutral element, the number of protons = number of electrons, then
Calcium has 20 electrons.
Only the number of neutrons could change.
According to the previous description, the last option is correct. ( also put the options too)
Ответ: