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प्रश्न
Which among the following is the largest element?
विकल्प
Na
Mg
K
Ca
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उत्तर
K
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संबंधित प्रश्न
An element has its electron configuration as 2, 8, 2. Now answer the following question.
a. What is the atomic number of this element?
b. What is the group of this element?
c. To which period does this element belong?
d. With which of the following elements would this element resemble? (Atomic numbers are given in the brackets)
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| Column A | Column B |
| Electronic configuration |
Valency |
| 1) 2, 2 | a) 1 |
| 2) 2, 8, 1 | b) 2 |
| 3) 2, 5 | c) 3 |
| d) 5 |
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- Write name of any two metalloid elements.
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An element has its electron configuration as 2, 8, 1. Now answer the following questions:
- What is the atomic number of this element?
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