Question

20. An atom X contains 13 protons, 14 neutrons & 10 electrons, it is- a) X 3+ ion b) X 3- ion c) neutral atom d) X2+ ion​

Answer 1

The atom is X 3+ ion as it has 13 protons which has positive charge and 10 electrons which has negative charge, so as the protones have a greater number the atom will be positively charged

13 - 10 = 3

Thus, the atom is X 3+ ion

Answer 2

The correct option is (a) X 3+ ion.

• Any atom has to have an equal number of protons and electrons in its structure to be neutral.
• If the atom has more amount of protons then it will carry a positive charge; on the other hand, if it carries more amount of electrons then it will carry a negative charge.
• In the question, the protons are 13 in number and have 10 electrons, thus it carries a positive charge and is $X^3^+$ ion.
• The number of protons with an atom determines its atomic number and thus the element comes out to be aluminium which has an atomic number 13 and 3+ charge as an ion.