Question
The number of electrons present in Carbon
is?Solution
The number of electrons present in carbon is 6. Therefore, the atomic number of carbon is 6. The electrons present in the outermost shell of the carbon atom is 4. Therefore, only 4 electrons participate In bonding. Thus, valency of carbon is 4 and it is known as a tetravalent element. Hence, option C is correct.
Find the least number of four digits which is exactly divisible by 6, 24 and 32?
The HCF of two numbers is 56, and their LCM is 1680. What is the sum of the numbers?
The least number which when divided by 3, 9, 12 and 16 leave zero remainder in each case and when divided by 17 leaves a remainder of 8 is:
- The sum and difference of L.C.M and H.C.F of two numbers are 294 and 126. If one of the numbers is 21, find the other number.
From a point on a circular track 10 km long A, B and C started running in the same direction at the same time with speeds of 3(1/3) km/h, 5 km/h and 2 k...
If the highest common factor of two numbers is 18, then which of the following may be the least common multiple of the numbers?
If the product of two numbers is 96 and their HCF is 8, find the LCM of the given two numbers.
The LCM of two numbers is 1800 while their HCF is 36. If one of the numbers is 432, then the other number is:
The LCM of two numbers is 33 times of their HCF. The sum of the LCM and HCF is 850. If one number is 25, then the other number is:
Find the LCM of 14, 20 and 30.
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