Advertisements
Advertisements
Question
Which of the following element does not lose an electron easily?
(a) Na
(b) F
(c) Mg
(d) Al
Solution
(b) F
F is the element that does not lose an electron easily, as it is a non-metal (halogen) belonging to group 17 of the periodic table.
APPEARS IN
RELATED QUESTIONS
Two elements ‘P’ and ‘Q’ belong to the same period of the modern periodic table and are in Group 1 and Group 2, respectively. Compare their following characteristics in tabular form:-
(a) The number of electrons in their atoms
(b) The sizes of their atoms
(c) Their metallic character
(d) Their tendencies to lose electrons
(e) The formula of their oxides
(f) The formula of their chlorides
An element 'X' belong to 3rd period and group 13 of the Modern Periodic Table.
(a) Determine the valence electrons and the valency of 'X'.
(b) Molecular formula of the compound formed when 'X' reacts with an element 'Y' (atomic number = 8).
(c) Write the name and formula of the compound formed when 'X' combines with chlorine
Write the number of vertical columns in the modern periodic table. What are these columns called?
Arrange the following elements in increasing order of their atomic radii:
Li, Be, F, N
How does Chemical reactivity of elements change on going from left to right in a period of the periodic table?
Give example in support of your answer.
How does the tendency to gain electrons change as we go down in group 17 of the periodic table? Why does it change this way?
Fill in the blank
Oxidising property ________from fluroine to iodine because the power to accpet electron decreases.
In the above table, H does not represent hydrogen.Some elements are given in their own symbol and position in the periodic table while others are shown with a letter. With refrence to the table answer the following questions.
1. Identify the most electronegative element.
2. Identify the most reactive element of Group I.
3. Identify the element from Period 3 with least atomic size.
4. How many valence electrons are present in Q?
5. Which element from group 2 would have the least ionisation energy?
6. Identify the noble gas of the fourth period.
7. In the compound between A and H, what type of bond would be formed and give its molecular formula.
The position of certain elements in the Modern Periodic Table is shown below:
Using the above table answer the following questions giving reasons in each case :
(i) Which element will form only covalent compounds?
(ii) Which element is a non-metal with valency 2?
(iii) Which element is a metal with valency 2?
(iv) Out of H, C, and F which has the largest atomic size?
(v) To which family does H, C, and F belong?
Select the correct answer from the options given below.
It is a metal in period 2 having electronic configuration 2, 1?