Question

6. The Aufbau principle

a. defines the undefined particles of the nucleus

b. is a method used to describe an atom’s ground state

c. provides radioactive levels of elements

d. lists the negative and positive spin of atoms

_____7. Ionization energy of an element

a. is the amount thrust needed to fly at mach speed

b. is the energy a neutron generates

c. cannot be calculated or observed

d. is the energy needed to remove an electron from an atom

_____8. Noble gases

a. are highly reactive with helium

b. are highly reactive with strontium

c. are unreactive under normal condition

d. are related to nobility

____9. A bond between atoms in a molecule is

a. made up of a shared electron pair

b. stronger than static electricity

c. always located in the 3s orbital

d. only a double bond

____10. Elements in 1V of the periodic table have

a. 3 valence electrons                              c. 5 valence electrons

b. 4 valence electrons                              d. 6 valence electrons

Answer 1

The Aufbau principle defines that ground atom, ion or electron fill the lowest possible energy orbital. Hence option B is correct It is a method used to describe an atoms ground state.

7) Ionization energy is the amount of energy which is needed to remove outermost electron of the orbital. Hence option D is correct

8) Noble gases completes their octet and hence are unreactive under normal condition. Thus option C is correct.

9) A bond between two atom is formed by shared pair of electron and it can be a single, double or triple bond in nature.

Therefore, option A is correct.

10) Group V of periodic table contain N, P, As, Sb, Bi

And all of them contain five valence electron.