A particle X has 17 protons, 18 neutrons an d 18 electrons. This particle is most likely to be :

A particle P has 18 electrons, 20 neutrons and 19 protons. This particle must be :

The charge on the atom containing 17 protons, 18 neutrons and 18 electrons is.

certain particle x has 17 protons 17 electrons and 18 neutrons (i) What is the mass number of X? (ii) What is atomic number of X? (iii) What is valency of X? (iv) identify the elemnet.

Name the particle which has 18 electrons , 18 neutrons and 17 protons in it.

In an atom consist of sub-atomic particles like protons, neutrons and electrons how are they arranged in the atom?

An atom of X contains 17 protons ad 18 neutrons. Identify X.