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Questions and Answers
What is the maximum number of electrons that can be present in the outermost orbit?
What is the maximum number of electrons that can be present in the outermost orbit?
- 8 (correct)
- 2
- 6
- 10
What is valency?
What is valency?
- The combining capacity of the atoms of an element (correct)
- The number of neutrons in an atom
- The number of electrons in an atom
- The number of protons in an atom
What is the valency of elements having 5 electrons in the valence shell?
What is the valency of elements having 5 electrons in the valence shell?
- 2
- 3 (correct)
- 1
- 5
What is the sum of protons and neutrons present in an atom known as?
What is the sum of protons and neutrons present in an atom known as?
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What are isotopes?
What are isotopes?
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If an element has 3 electrons in its valence shell, what is its valency?
If an element has 3 electrons in its valence shell, what is its valency?
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What is the maximum number of electrons that can be present in the second shell of an atom?
What is the maximum number of electrons that can be present in the second shell of an atom?
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How many protons are present in an atom with atomic number 20?
How many protons are present in an atom with atomic number 20?
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If an isotope of carbon has a mass number of 14, how many neutrons does it have?
If an isotope of carbon has a mass number of 14, how many neutrons does it have?
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What is the valency of an element with 6 electrons in its valence shell?
What is the valency of an element with 6 electrons in its valence shell?
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