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WorksheetsTry Out Chemistry 11 grade
Total questions: 20
Worksheet time: 2hrs 40mins
Which of the following statement describes the 1st ionization energy?
the energy needed to produce one mole of ions from one mole of gaseous atoms
the energy needed to remove the nearest electron from nucleus from each atom in one mole of atoms of the element in the gaseous state to form one mole of gaseous 1+ ions
the energy needed to remove the outermost electron from each atom in one mole of atoms of the element in the gaseous state to form one mole of gaseous 1+ ions
the energy required to remove the nearest electron from nucleus from each atom in one mole of atoms of the element in the gaseous state to form one mole of gaseous 1+ ions
Which type of bonding occurs between PH3 (phosphine ) and H+ (hydronium)?
metallic bond
hydrogen bond
co-ordinate bond ( dative covalent bond )
ionic bond
The following factors influence the ionization energies of an atom, Except :
1. The size of nuclear energy
2. The shielding effect of inner electrons
3. The number of neutrons
4. The distance of outer electrons from the nucleus
1,2,3
1 only
2 only
3 only
The following compounds contain ionic bond, Except :
1. hydrochloric acid (HCl)
2. magnesium chloride (MgCl2)
3. sodium chloride (NaCl)
1,2, and 3
1 and 2
2 and 3
1 only
What is the correct label for each orbital?
Px, Py, and Pz
S, Px, and Py
S, Py, and Pz
S, Py, and Pz
Atom nickel (Ni) has atomic number 28.
Which one is the correct electronic configuration of the atom?
[Ar] 3d10
[Ar] 3d8 4s2
[Ne] 3d8 4s2
[Ne] 3d9 4s1
What are the shapes of the molecules of carbon dioxide and methane?
A
B
C
D
Urea is a product of animal metabolism. It can also be used as a fertilizer.
The diagram shows the angle Y in this molecule.
Which statements about the structure of urea are correct?
1. Angle Y is approximately 120°.
2. The molecule has two p bonds.
3. The molecule has only three lone pairs of electrons.
1,2, and 3
1 and 2
2 and 3
1 only
Electrons in full inner shells repel electrons in outer shells. Full inner shells of electrons prevent the full nuclear charge from being felt by the outer electrons.
What is explained in the text above?
size of nuclear charge
distance of outer electrons from nucleus
shielding effect of inner electrons
ionisation energy
Which atom has the electronic configuration [Ar]3d54s1?
Nickel
Chromium
Manganese
Magnesium
Which molecule contains the smallest bond angle?
H2
CO2
O2
H2O
A simple ion Y+ contains 10 protons.
What is the electronic configuration of Y+?
1s22s22p6
1s22s12p6
1s22s12p5
1s22s22p5
Which one of the following statements describes ionic bonding?
it is a combination of metal and non-metal, the electrons in the metal atoms' outer shells are transferred to the non-metal atoms.
it is a combination of metal and non-metal, the electrons in the metal atoms' outer shells are shared with the non-metal atoms.
the metal and non-metal atoms usually end up with outer electron shells that are complete, they have an electronic configuration of group 17.
the metal and non-metal atoms usually end up with outer electron shells that are incomplete, they have an electronic configuration of group 17.
Which of the following is not true as the characteristic property of covalent compounds?
They can conduct electricity when they molten form.
Some of them are soluble in water, some of them are not.
They have low melting and boiling points.
They are not good at conducting electricity.
Which of the following is a characteristic property of ionic compounds?
They have low melting and boiling points.
Most ionic compounds are insoluble in water.
They have high melting and boiling points.
Most ionic compounds are soluble in the organic solvent.
The following statements are correct about the metallic bond, except .....
Metallic bonding is strong
The strength of the metallic bond increases when increasing positive charge on the ions in the metal lattice.
There are strong attractive forces between the positive charge ions and the delocalized electrons.
Metals have low boiling and melting points because of their metallic structure.
A
B
C
D
In which species is there a lone pair of electrons?
CH3
CH3+
CH3-
CH4
Atom X has proton number 15.
What is the simple electronic configuration of X?
2,8,5
2,2,6,2,3
2,2,6,5
2,5,8
Which pair of molecules have the same shape?
H2O and CO2
H2O and SCl2
NH3 and BF3
SCl2 and MgCl2
