How many metals are present in second period of periodic table?
How many metals are present in second period of periodic table?
There are exactly metals present in the second period of the periodic table: Lithium () and Beryllium ().
Marking Scheme
- 1Identifying the elements of the second period (0.5 marks)
- 2Correctly identifying Lithium and Beryllium as the only metals (0.5 marks)
Hint
List the elements of the second period (atomic numbers 3 to 10) and identify which ones are classified as metals.
Quick Oral Answer
There are 2 metals in the second period of the periodic table: Lithium and Beryllium.
Analysis & Explanation
The second period of the periodic table consists of eight elements: Lithium (), Beryllium (), Boron (), Carbon (), Nitrogen (), Oxygen (), Fluorine (), and Neon ().
- Lithium () and Beryllium () are metals (alkali metal and alkaline earth metal respectively).
- Boron () is a metalloid.
- Carbon (), Nitrogen (), Oxygen (), Fluorine (), and Neon () are non-metals.
Therefore, there are only metals in the second period.
Common Mistakes
- 1Including Boron as a metal, whereas it is actually a metalloid.
- 2Confusing the second period with the second group.
Interesting Facts
Lithium is the lightest known metal and is so soft that it can be easily cut with a knife, as highlighted in the NCERT text.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2020?
This question carries 1 mark in the CBSE Class 10 Science 2020 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Metals and Non-metals" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Physical Properties of Metals and Non-metals" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2020 paper?
This is a Very Short Answer question from Section A in the CBSE Class 10 Science 2020 paper.