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प्रश्न
Select the correct answer
Configuration of an element is 2, 8, 1. Which of the following statement is true?
विकल्प
Valency of element is 7
Element is diatomic
Element is non metal
Element forms basic oxide
उत्तर
Element forms basic oxide
element forms basic oxide because the element is a metal as it has valency 1.
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संबंधित प्रश्न
Choose the word or phrase from the brackets which correctly complete the following statement:
Metals are good ______ (oxidizing agents/reducing agents) because they are electron ______ (acceptors/donors).
How does the chemical reactivity of
alkali metals vary?
The electronic configuration of an element T is 2, 8, 8, 1.
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Choose the correct answer.
An alkaline earth metal
(i) Lead
(ii) potassium
(iii) calcium
(iv) Copper
Study the extract of the Periodic Table given below and answer the questions that follow. Give the alphabet corresponding to the element in question. DO NOT repeat an element. 
Which non-metallic element has the valency of 2?
Among the elements of the second period, Li to Ne, pick out the element that is the most reactive metal
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Refering to changes in the properties of elements on moving from left to right across a period of the periodic table. Choose the correct answer.
The non-metallic character of the elements :
The tendency of an element to form anion is the ______ character of that element.
The metallic character of the element decreases moving across a period from left to the right.
