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Electron configuration of calcium

Calcium is denoted by the letter “Ca” and its atomic number is 20. The number of electrons in Calcium is 20. We will checking about electron configuration of calcium The electron configuration of calcium Electron configuration is the arrangement of electrons in different orbitals of an atom. It is obtained as per the below rules

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Prime numbers : Definition, Examples, List, Co Prime

Prime Numbers

A prime number can be divided, without a remainder, only by itself and by 1. For example, 19 can be divided only by 19 and by 1.

Interesting facts about prime
•The only even prime number is 2. All other even numbers can be divided by 2.
•If the sum of a number’s digits is a multiple of 3, that number can be divided by 3.
•No prime number greater than 5 ends in a 5. Any number greater than 5 that ends in a 5 can be divided by 5.
•Zero and 1 are not considered prime numbers.
•Except for 0 and 1, a number is either a prime number or a composite number. A composite number is defined as any number, greater than 1, that is not prime.


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