" (c) What is the number of protons in atom "X" ? "

An atom of the element is represented as "_23^61X ? What is the number of protons in X ?

An atom has three shells. If there are 4 electröns in the third shell, then a) What is its atomic number? b) What is the number of protons? c) What is the number of electrons? d) Write the method of arrangement of the electron, in the shell?

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 ?

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 ?

What is the number of proton and neutron in ""_(92)X^(235) ?

(a) Describe the Rutherford's model of an atom. State one drawback of Rutherford's model of the atom (b) 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 ?

(a) Describe Thomson's model of the atom. Which subatomic particle was not present in Thomson's model of the atom? (b) 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?