Chidi Chemistry Test

The atom and ion of sodium have the same -------------

• Chemical properties

• Electrical charge

• Electrical configuration

• Number of protons

Elements from left to right in a given period of the periodic table shows ...........

• Similarities in chemical properties

• Steady decreases in electronegativity

• Steady increase in atomic number

• similarities in electronic structure

Li, Na and k are in the same group in the periodic table because they have the same ..................

• Atomic radius

• Electronic configuration

• Ionization energy

• Number of valence electrons

Which of the following atom contains the highest number of electrons in the outermost shell

• ⁸O

• ¹⁰Ne

• ¹⁵P

• ¹⁹K

Which of the following is the relative molecular mass of an alkanoic acid, which has empirical formula CH2O

(H=1, C=12, O=16)

• 42

• 45

• 60

• 110

What is the maximum number of electrons that can be accommodated in the d-orbital of an atom?

• 2

• 6

• 8

• 10

Elements P, Q and R have atomic numbers 9, 16 and 20 respectively.

Which of them would gain electrons during ionic bonding?

• Q and R

• P and R

• P and Q

• P, Q and R

Physical properties of substances include the following Except

• Boiling point

• Density

• Malleability

• Rusting

Sour milk contains .................. acid

• Citric

• Lactic

• Ethanoic

• Methanoic

what is the mass number of an element having 20 neutrons, 15 protons and 15 electrons

• 15

• 30

• 35

• 50