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प्रश्न
Chorine in the periodic table is surrounded by the elements with atomic number 9, 16, 18 and 35.
Which is more electronegative than chlorine?
उत्तर
Fluorine with atomic number 9.
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संबंधित प्रश्न
Name any two elements of group one and write their electronic configurations. What similarity do you observe in their electronic configurations? Write the formula of oxide of any of the aforesaid elements.
Write the number of periods the Modern Periodic Table has. State the changes in valency and metallic character of elements as we move from left to right in a period. Also state the changes, if any, in the valency and atomic size of elements as we move down a group.
Based on the group valency of elements state the formula lot the following giving justification for each :-
(i) Oxides of 1st group elements,
(ii) Halides of the elements of group 13, and
(iii) Compounds formed when an element of group 2 combines with, an element of group 16.
Classify the following elements into metals, non-metals and metalliods
As, C, Hg, Mg, S, Si
In terms of electronic configurations, explain the variation in the size of the atoms of the elements belonging to the same period and same group ?
State whether the following statement is true or false
On moving horizontally across a period, number of valence electrons increases from one to eight.
What is the common feature of electronic configurations of the elements at the end of period 2 and period 3?
Arrange the following in order of increasing radii:
N, O, P
The elements of one short period of the periodic table are given below in order from left to right:
| Li | Be | B | C | O | F | Ne |
One element of this period is missing. Which is the missing element and where should it be placed?
Select the correct answer from the options given below.
Is the group number of the element whose atomic number is 4.
