Periodic Table

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Q1. What is the period number of Argon? (2020)

Solution:

Argon is located in Period 3 of the periodic table.

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Q2. What is the period number of Sodium in the periodic table? (2017)

Solution:

Sodium is in period 3 of the periodic table.

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Q3. Which element is represented by the symbol 'K'? (2022)

Solution:

The symbol 'K' represents Potassium, derived from its Latin name 'Kalium'.

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Q4. Which of the following elements is a noble gas? (2021) 2021

Solution:

Neon is a noble gas, which is characterized by its lack of reactivity.

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Q5. What is the atomic number of Oxygen?

Solution:

The atomic number of Oxygen is 8.

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Q6. What is the valency of Oxygen? (2021)

Solution:

Oxygen has a valency of 2, as it needs two electrons to complete its outer shell.

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Q7. What is the period number of Lithium in the periodic table? (2022)

Solution:

Lithium is located in period 2 of the periodic table.

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Q8. Which element has the atomic number 1?

Solution:

Hydrogen has the atomic number 1.

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Q9. What is the valency of Magnesium? (2015)

Solution:

Magnesium has a valency of 2, as it can lose two electrons.

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Q10. Which element has the highest atomic number in the first 20 elements? (2020)

Solution:

Calcium has the highest atomic number (20) among the first 20 elements.