SCIENCE MIND CHALLENGE.2NDQ.1ST PART

Who is the scientist who proposed the quantum mechanical model of atom?

         

• ERNEST RUTHERFORD

• ERWIN SCHRODINGER

. What is the valence electron of nitrogen?

           

• 1

• 3

• 5

• 7

Which term best describes the area surrounding the nucleus where an electron is most probable to be located?

           

• ATOMIC ORBITAL

• ELECTRON

• PROTON

• NUETRON

How would you describe the shape of s orbitals?

• DUMBBELL

• OBLIQUE

• SPHERE

• FLOWER SHAPE

When considering the third principal energy level, how many distinct types of orbitals exist?

• 1

• 2

• 3

• 4

 Which of the following is the electron configuration of Magnesium?

• 1s² 2s² 2p⁶ 3s² 3p⁴       

• 1s² 2s² 2p⁶ 3s² 

Which statement is incorrect about Quantum Mechanical Model of Atom?

• The quantum mechanical model views an electron as a cloud of positive charge.

       having a certain geometrical shape

• The quantum mechanical model of the atom comes from the mathematical solution to 

       the Schrodinger equation.

• The quantum mechanical model also gives information about the energy of the

       electron

• The model also describes the region of space around the nucleus as consisting of

       shells

What kind of element has low electronegativity and low ionization energy?

               

• METALS

• NON-METALS

• NOBLE GASES

What kind of bond will result when two identical non-metallic atoms combine? 

• COVALENT BOND

• IONIC BOND

• METALLIC BOND

What kind of particle is produced after covalent bonding?

• ATOM

• MOLECULE

• ION

• ELECTRON