Why are group 1 metals highly reactive

They easily lose their outermost electron

They easily gain seven electrons

They have complete outer shells

Class 9 Chemistry · Chapter 9 · Test 1

Group 1 Elements

25 MCQs covering group 1 alkali metals their electronic configuration reactivity atomic size melting point density softness and trends down the group.

MCQs

25 questions · 20 min · 25 marks

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Sample questions

The first 5 of 25. Try each one, then tap to see the answer.

Question 1
What is the outermost electronic configuration of group 1 elements
- Ans1
- Bns2
- Cns2np5
- Dns2np6
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Answer: A
All group 1 elements have one electron in their outermost shell.
Question 2
What are the elements of group 1 called
- AHalogens
- BAlkali metals
- CNoble gases
- DTransition metals
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Answer: B
Group 1 elements are called alkali metals.
Question 3
Which element is an exception to the metallic nature of group 1
- AHydrogen
- BLithium
- CSodium
- DPotassium
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Answer: A
Hydrogen is the first element of group 1 but it is a non-metal gas.
Question 4
How many electrons are present in the outermost shell of group 1 elements
- AOne
- BTwo
- CSeven
- DEight
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Answer: A
Group 1 elements have a single electron in their outermost shell.
Question 5
Why are group 1 metals highly reactive
- AThey easily lose their outermost electron
- BThey easily gain seven electrons
- CThey have complete outer shells
- DThey have no electrons
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Answer: A
The single outermost electron can be removed easily.

More tests in Group Properties and Elements

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