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प्रश्न
Give alongside is a part of the periodic table :
As we move horizontally from left to right:
| Li | Be | B | C | N | O | F | |
| Na | Mg | Al | Si | P | S | Cl |
(i) What happens to the metallic character of the elements?
(ii) What happens to the atomic size?
उत्तर
(i) The metallic property of elements decreases as we move horizontally from left to right.
(ii) The atomic size of elements decreases as we move horizontally from left to right.
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संबंधित प्रश्न
How would the tendency to lose electrons change as we go from left to right across a period of the periodic table?
Name the type of elements which have two electrons in the outermost orbit.
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
From the standpoint of atomic structure, what determines which elements will be the first and which the last in a period of the periodic table?
Answer the following question.
Define the atomic size. Give its unit of measurement. In the modern periodic table what trend is observed in the atomic radius in a group and a period and why is it so?
Give the symbol and valency of the following element and radical.
Calcium
State what is meant by the term chemical formula.
Group 1 and 2 : s block : : group 13 and 18 : _______
Explain the position of hydrogen in the periodic table.
A part of modern periodic table is given below. On its basis, answer the following questions:
| Group No. → | 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 |
| Period ↓ | ||||||||
| 2 | A | B | ||||||
| 3 | E | D | F | C |
Which of the element is a Noble gas?
