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- 1. Multiple Choice
An element has 16 protons. The number of electrons present in the valence shell of this element are_________.
6
2
8
4
- 2. Multiple Choice
What is its valency?
(a)Number of electrons lost during a bond formation
(b) Number of electrons gained during a bond formation
(c) Number of electrons shared during a bond formation
All three options:(a),(b) and (c )
- 3. Multiple Choice
An element has 16 protons and 32 nucleons in its nucleus, how many neutrons are present in the atom?
8
16
18
48
- 4. Multiple Choice
Identify an element with two shells and five electrons in the valence shell.
Nitrogen
Oxygen
Phosphorous
Silicon
- 5. Multiple Choice
Identify an element with tendency to lose electrons, having three shells and valency 1.
Potassium
Sodium
Lithium
Chlorine
- 6. Multiple Choice
Identify an element with tendency to gain electrons, having three shells and valency 3
Nitrogen
Alumimium
Boron
Phosphorous
- 7. Multiple Choice
Identify an element with three shells and zero valency.
Argon
Neon
Helium
Kyrpton
- 8. Multiple Choice
Identify an element with one shell and zero valency.
Hydrogen
Helium
Boron
Argon
- 9. Multiple Choice
Identify an element with twice the number of electrons in its L shell as in its K shell.
Sulfur
Aluminium
Carbon
Silicon
- 10. Multiple Choice
If the atomic number of an element is 12. Predict the valency of this element. Is it a metal or a non-metal?
2,Non-metal
2,Metal
6,Non-metal
6,Metal
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