Structure Of The Atom Question Preview (ID: 53218)


An Interactive Quiz / Week …2..: Self-Learning Program: Scholastic Year 2020/2021. TEACHERS: click here for quick copy question ID numbers.

The atomic mass of the element calcium Ca (Z = 20, A = 20) is:
a) 20 u
b) 40 u
c) 60 u
d)

The charge of nucleus of the element neon Ne (Z = 10, A = 20)is
a) 10+
b) 20+
c) 30+
d)

The charge of the electron cloud of the element magnesium Mg (Z= 12, A = 24) is::
a) 12 -
b) 24 -
c) 26 -
d)

The atomic mass of an oxygen atom that has 17 nucleons and 9 neutrons is:
a) 8 u
b) 9 u
c) 17 u
d)

The atomic mass of a sodium atom that has 11 protons, 11 electrons and 12 neutrons is:
a) 11 u
b) 12 u
c) 23 u
d)

The charge of a fluorine atom that has 9 protons, 9 electrons and 11 neutrons is:
a) 9
b) 11
c) 0
d)

The average atomic mass of carbon – 12 and carbon – 14 is:
a) 12 u
b) 14 u
c) Between 12 u and 14 u
d)

Isotopes have:
a) The same number of nucleons
b) The same number of protons
c) The same number of neutrons
d)

(Z= 12, A = 23)Mg and (Z =12, A =25)X have the:
a) Same atomic mass
b) Same nuclear charge
c) Same number of neutrons
d)

(Z =13, A=27)X and (Z =14, A =27)X have the:
a) Same atomic mass
b) Same nuclear charge
c) Same number of neutrons
d)

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