اختبار ميد تجريبي
Quiz by Dr.Mariam
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- Q1
Electrons are found in the nucleus of the atom.
True
False
120s - Q2
In an atom, the number of protons are equal to number of neutrons.
False
True
120s - Q3
Isotopes differ in the number of ……..
Neutrons.
Positive charge.
Electrons.
Protons.
120s - Q4
Identify the element that has an atomic number equal to32.
Sulfur (S)
Technetium (Tc)
Sodium (Na)
Germanium (Ge)
120s - Q5
How many significant figures are in 322000?
4
5
6
3
120s - Q6
Read the length of the metal bar with the correct number of significant figures.
4.831
4
4.83
4.8
120s - Q7
What is the volume of a 11.99 g of metal with a density of 1.72 g/cm3?
6.97 cm3
0.1435 cm3
20.62 cm3
13.7 cm3
120s - Q8
Foran electron in orbital 4f, the quantum numberl is .
1
4
3
2
120s - Q9
Which one of the following set of quantum numbers is allowed?
n = 0, l = 1, ml = 1
n = 3, l = 1, ml = 1
n = 2, l = 1, ml = 2
n = 4, l = 3, ml = 4
120s - Q10
which one of the following orbitals cannot exist?
1s
4d
3f
2s
120s
