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प्रश्न
An element with the largest atomic radius among the following is ______.
पर्याय
Carbon
Nitrogen
Lithium
Beryllium
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उत्तर
An element with the largest atomic radius among the following is lithium.
Explanation:
- The second period contains carbon, nitrogen, lithium, and beryllium.
- Over a period, the atomic radius decreases from left to right.
- In the second period, lithium is on the far left.
- Thus, out of C, N, and Be, lithium has the biggest atomic radius.
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संबंधित प्रश्न
Give the trends in atomic size on moving across the period left to right.
Give reasons for the following:
The size of the anion is greater than the size of the parent atom.
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Atomic size increases from left to right across a period.
The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The atomic size:
_______ is the distance between the nucleus of the atom and its outermost shell.
Which of the following gives the correct increasing order of the atomic radii of O, F, and N?
Elements have been arranged in the following sequence on the basis of their increasing atomic masses.
| F, | Na, | Mg, | Al, | Si, | P, | S, | Cl, | Ar, | K |
- Pick two sets of elements which have similar properties.
- The given sequence represents which law of classification of elements?
An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a divalent halide.
- Where in the periodic table are elements X and Y placed?
- Classify X and Y as metal (s), non-metal (s) or metalloid (s)
- What will be the nature of oxide of element Y? Identify the nature of bonding in the compound formed
- Draw the electron dot structure of the divalent halide
Atomic number of a few elements are given below
10, 20, 7, 14
- Identify the elements
- Identify the Group number of these elements in the Periodic Table
- Identify the Periods of these elements in the Periodic Table
- What would be the electronic configuration for each of these elements?
- Determine the valency of these elements
- Electropositive nature of the element(s) increases down the group and decreases across the period
- Electronegativity of the element decreases down the group and increases across the period
- Atomic size increases down the group and decreases across a period (left to right)
- Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.
- Name the most electropositive element among them
- Name the most electronegative element
- Name the element with smallest atomic size
- Name the element which is a metalloid
- Name the element which shows maximum valency.
