Question #1 The name/symbol combination that is incor rect is ? . 1. arsenic/As
ID: 1312291 • Letter: Q
Question
Question #1
The name/symbol combination that is incorrect is ? .
1. arsenic/As
2. potassium/P
3. boron/B
4. nickel/Ni
5. silicon/Si
Question #2
The symbol for the element gold is
1. Go
2. G
3. A
4. Au
5. Ag
Question #3
The symbols Fe, Hg, N, Au, Ne have the
following names:
1. iron; mercury; nitrogen; gold; neon
2. fluorine; mercury; nickel; silver; neon
3. iron; mercury; nitrogen; silver; neon
4. fluorine; hydrogen; nitrogen; gold; neon
5. iron; hydrogen; nickel; gold; nitrogen
Question #4
Which isotope has the largest number of neutrons in the nucleus?
1. 130Te
2. 123Sb
3. 127I
4. 120Sn
Question #5
The isotope 65
29Cu has ? neutrons and ?
protons.
1. 29, 65
2. 36, 29
3. 65, 29
4. 29, 36
5. 29, 29
Question #6
Most of the naturally occuring elements are
1. nonmetals
2. halogens
3. metals
4. noble gases
5. metalloids
Question #7
The atomic number, which orders the elements in the periodic table, has been identified as ? of the atom.
1. the number of electrons in the nucleus
2. the number of protons in the nucleus
3. the sum of the number of protons and
neutrons in the nucleus
4. the number of neutrons in the nucleus
Question #8
According to the Periodic Law, which of the
following should have properties similar to
carbon?
1. B
2. H
3. Si
4. N
Question #9
All the elements in the second column of the
periodic table have a valence of +2.
1. False
2. True
Question #10
Fluorine, chlorine and bromine are members
of ? .
1. the inert gas group
2. the alkali metal group
3. the halogen group
4. the noble gas group
5. the alkaline earth metal group
Question #11
In the periodic table, a vertical column of
elements is called ? .
1. a group
2. an orbital
3. a period
4. a transition
5. a lanthanide
Question #12
The five thousand billion freely moving electrons in a penny repel one another.
Why don
Explanation / Answer
1)
2. potassium/P
The chemical symbol of potassium is K
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2)
The symbol for gold is
4. Au
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3)
1. iron; mercury; nitrogen; gold; neon
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4)
Te atomic number 52
nutron number = mass number-atomic number = 130-52 = 78
for Sb
nutrons = 123-51 = 72
for I
nutrons = 127 - 53 = 74
for Sn
nutrons = 120 -50 = 70
isotope has the largest number of neutrons in the nucleus is
1. 130Te
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5)
Cu has 29 protons , nutrons =65-29=36
The Answer is
4. 29, 36
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6)
The Answer Is
3. metals
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7)
The Answer is
2. the number of protons in the nucleus
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8)
Answer
3.Si
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9)
Answer is
2.True
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10)
3.The Halogen Group
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11)
Answer is
1.a group
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12)
Answer is
As the electrons are having negative charges and protons inside
the nucleus have positive charge sok electrons are bounded towards
nucleus because of attractive force
The Answer is
5. They are attracted to the five thousand billion positively charged protons
in the atomic nuclei of atoms in the penny.
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13)
Classical Behaviour gives continous spectrum and quantum behaviour gives
descrete spectrum
The Answer is
2. continuous spectrum
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14)
Answer is
1. atomic spectra
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15)
Answer
15) 4. None of these
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