# What number is 1.639440612?

One and six hundred thirty-nine million, four hundred forty thousand, six hundred twelve billionths.

### What are the rules fr multiplication and divisions of integers?

(positive number) x (positive number) = positive number (positive number)/(positive number) = positive number (positive number) x ( negative number) = negative number (positive number)/( negative number) = negative number (negative number) x (negative number) = positive number (negative number)/(negative number) = positive number

### What is 49.9 million?

It is a number. A counting number, an integer, a rational number, a real number, etc. It is a number. A counting number, an integer, a rational number, a real number, etc. It is a number. A counting number, an integer, a rational number, a real number, etc. It is a number. A counting number, an integer, a rational number, a real number, etc.

### What is up with the chemical elements?

Actinium which is number 89. Aluminum which is number 13. Americium which is number 95. Antimony which is number 51. Argon which is number 18. Arsenic which is number 33. Astatine which is number 85. Barium which is number 56. Berkelium which is number 97. Beryllium which is number 4. Bismuth which is number 83. Bohrium which is number 107. Boron which is number 5. Bromine which is number 35. Cadmium which is number 48…

### How do you get the number of neutrons in a element?

You can get the number of neutrons of an element by taking the number of protons, the number of electrons, or the atomic number of the element (seeing as they are all the same number) and subtract that number from the atomic mass. This will give you the number of neutrons of an element. EXAMPLE: THE ELEMENT -BERYLLIUM (Be) Atomic number/Proton number/Electron number =4 Mass number= 9 To find neutron number: Mass number- Atomic number/Proton…

### How do you work out how to times a positive number by a negative number?

A positive number times a positive number will always get you a positive number A negative number times a negative number will always get you a positive number (same signs will get you a positive number) but A positive number times a negative number will always get you a negative number or A negative number times a positive number will always get you a negative number (different signs will get you a negative number)

### How to determine the number of neutrons an atom contains if you know its mass number and atomic number?

If you know the atomic number and the mass number, you can simply determine the number of neutrons using this formula: Mass number = (number of protons) + (number of neutrons) Or, Number of neutrons = (mass number) - (number of protons) All you have to remember is that the atomic number is the number of protons an atom contains.

### How do you find out the number of electrons from atomic number and mass number?

* The number of electrons is equivalent to the number of protons. (unless it is an electrically unbalanced ion) * The atomic number is the number of protons in an atom, therefore, the atomic number is the number of electrons. * Mass number - number of neutrons = Number of protons = Number of electrons * Number of neutrons = Atomic mass - Number of protons (Mass number - Number of protons = Number of…

### How do you determine if a number is prime or composite?

If the number is divisible by any number and the quotient comes out to a whole number, then that number is composite. The number is prime when divided by a number, the answer is a decimal, then the number is prime. A prime number has exactly two factors, 1 and the number itself. Any number having more factors is a composite number.

### What is the difference between the mass number and the atomic number of an atom?

The difference between the atomic number and the mass number is that the atomic number is the number of protons in the nucleus of an atom of that element. The mass number is the total number of protons and neutrons in the atom. Atomic number = number of protons Mass number = total number of protons + neutrons

### What is the number of protons electrons and nuetrons in the element aluminum?

The number of protons for any element is the atomic number. The number of electrons is equal to the number of electrons. To find the number of nuetrons you must subtract the atomic number from the mass number mass number-atomic number= number of nuetrons protons=electron the number of protons in the element aluminum is 13. The number of electrons is 13.

### Is a whole number not a real number?

A whole number is definitely a real number! For example say you have the number 7. 7 is a real number, because it doesn't have any decimals or fractions! Hope that helps! A whole number is a real number. A real number can be a fraction, a negative, a positive number, rational, or an irrational number. A whole number is a positive number or zero.

### Relationship between atomic number and atomic mass number?

Atomic number = number of protons Atomic mass number = number of protons + number of neutrons Relative mass number = the weighted average mass numbers of the naturally occurring isotopes as compared to C-12 If you delete the atomic number from the mass number you get the number of neutrons. The atomic number is the number of protons and electrons. (They are both the same number.)