ScieGaling Question Preview (ID: 56649)


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What kind of particles is produced after covalent bonding?
a) Atom
b) Molecule
c) Ion
d) Electron

When does covalent bonding takes place?
a) When atoms share electrons with one another.
b) When the attraction between atoms is strong.
c) When atoms collide with one another.
d) When atoms attain stability.

Who proposed the probability that electrons will be found in certain locations around the nucleus of an atom?
a) Neil Bohr
b) Erwin Schrodinger
c) Ernest Rutherford
d) J.J. Thomson

Which orbital designation has the highest enrrgy?
a) 2s
b) 2p
c) 3d
d) 4s

Which among the following shows that an atom is stable?
a) having 2 valence electrons
b) having 4 valence electrons
c) having 6 valence electrons
d) having 8 valence electrons

Which has the highest melting temperature?
a) sodium chloride (salt)
b) parrafin wax (candle wax)
c) sucrose (table sugar)
d) lead wire

Nitrogen (N) belongs to family 5A and it is diatomic. How many nonpolar covalent bonds will there be in N2 molecules?
a) 1
b) 2
c) 3
d) 4

H2O (Water) is an example of.
a) compound
b) element
c) mixture
d) pure substance

When an atom gains or loses electrons, it is called an.
a) ion
b) isotope
c) isoion
d) element

What are the three particals of an atoms called?
a) eletrons, protons, molecules
b) protons, neutrons, electrons
c) ions, neutrons, electrons
d) protons, electrons, isotopes

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