Structure Of The Atom Question Preview (ID: 53329)


An Interactive Quiz / Week 3: Self-Learning Program: Scholastic Year 2020/2021. TEACHERS: click here for quick copy question ID numbers.

The atomic number of the element sodium (Z = 11, A = 23)Na is:
a) 11
b) 12
c) 13
d)

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

The charge of the electron cloud of the element potassium (Z = 19, A = 39)K is:
a) 39 -
b) 20 -
c) 19 -
d)

The atomic mass of an oxygen atom that has 16 nucleons and 8 neutrons is:
a) 24 u
b) 16 u
c) 8 u
d)

The mass number of a magnesium atom that has 12 protons, 12 electrons and 13 neutrons is:
a) 12
b) 13
c) 25
d)

The number of neutrons of a fluorine atom that has 9 protons, 9 electrons and 19 nucleons is:
a) 9
b) 10
c) 19
d)

The average atomic mass of chlorine – 35 and chlorine – 37 is:
a) Less than 35 u
b) Between 35 u and 37 u
c) More than 37 u
d)

Isotopes have the:
a) Same number of nucleons
b) Same number of neutrons
c) Same number of electrons
d)

(Z = 12, A = 25)Mg and (Z = 13, A = 25)X have the:
a) Same atomic mass
b) Same nuclear charge
c) Same number of neutrons
d)

(Z = 14, A = 27)X and (Z = 14, A = 28)X have the:
a) Same atomic mass
b) Same nuclear charge
c) Same number of neutrons
d)

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