The mass number of element 'X' is 'A' . If `X^(4-)` contains 10 electrons and 6 neutrons , then the value of `A/3` is

The mass number of an element 'X' is 'A' . If X^(4+) contain 16 electrons and 20 neutrons, then calculate the value of (A)/(10) is -

The mass number of an element is 23 and it contains 11 electrons. What is the number of protons and neutrons in it ? What is the atomic number of the element ?

The mass number of an element is 18. It contains 7 electrons. What is the number of protons and neutrons in it ? What is the atomic number of the element ?

An atom of an element contains 29 electrons and 35 neutrons . Deduce - the number of protons

An atom of element X contains 3 protons, 3 electrons and 4 neutrons: What is its mass number?

An atom of element X contains 3 protons, 3 electrons and 4 neutrons: What could element X be?

An atom of element X contains 3 protons, 3 electrons and 4 neutrons: What is its atomic number?