PERIODIC TABLE MCQs PART 1

As an atom is neutral, the number of protons is equal to ______

• Atomic number

• Number of neutrons

• Number of electrons

• Mass Number

Mendeleev arranged the elements in order of _______

• Increasing mass number

• Decreasing relative atomic mass

• Increasing relative atomic mass

• Constant mass number

The most important classification in chemistry is _______

• Naming of organic compounds

• Arrangement of elements in the periodic table

• Balancing of chemical equations

• Electronic configuration of elements

The modern periodic law states that the properties of elements are a periodic function of their _______

• Atomic numbers

• Relative atomic mass

• Number of electrons

• Molar mass

The Russian scientist who first constructed the periodic table was _____

• Dimitri Mendeleev

• Dimitri Mendelèev

• Dmitri Mendelèev

• Dmitri Mendeleev

The key to periodicity of an element lies in the ______

• Periods and groups of the element

• IUPAC Name of the element

• Electronic configuration of its atoms

• Number of neutrons in the element

Which of the following statements is/are FALSE

• Atoms consist of a central positively charged nucleus

• The maximum possible number of electrons in a shell is given by the formula (2n)²

• Electrons in shell L possess more energy than those in shell K

• Hydrogen atom has only one electron in K shell

The electrons in the outermost shell of an atom are known as _____

• Stable electrons

• Valence electrons

• Configured electrons

• Inert electrons

______ makes up the s-block

• Group 1, Group 2 and Group 3

• Group 2 and Group 3

• Group 1 only

• Group 1 and Group 2

For convenience, Hydrogen is placed in Group 1 because ________

• It is the first element

• It is a metal

• It has a single electron

• It is reactive