Atomic Structure and Periodicity - SS2 Chemistry Past Questions and Answers - page 1

Which of the following subatomic particles has a positive charge?

The atomic number of an element is defined by the number of:

Which of the following subatomic particles has a negligible mass?

Isotopes of an element have the same number of:

The horizontal rows in the periodic table are called:

Elements in the same group of the periodic table have the same number of:

The noble gases belong to which group in the periodic table?

The atomic radius generally increases:

Which element has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1?

The element with the symbol Fe belongs to which group in the periodic table?