Advertisements
Advertisements
Question
Fill in the blanks from the words A to F given below.
A: Decreases
B: Increases
C: Remains same
D: Increases by one
E: Electropositive
F: Electronegative
Down a group in the Modern Periodic Table.
No. of electron shells __________; No. of valence electrons ________; Electronegativity ________ Character of elements changes from _________ to ____________.
Advertisements
Solution
Down a group in the Modern Periodic Table.
No. of electron shells increases by one; No. of valence electrons remains same; Electronegativity decreases Character of elements changes from electronegative to electropositive.
APPEARS IN
RELATED QUESTIONS
Given below are some elements of the modern periodic table. Atomic number of the element is given in parentheses.
A(4), B(9), C(14), D(19), E(20)
(a) Select the element that has one electron in the outermost shell. Also, write the electronic configuration of this element.
(b) Which two elements amongst these belong to the same group? Give reasons for your answer.
(c) Which two elements amongst these belong to the same period? Which one of the two has bigger atomic radius?
In the following set of elements, one element does not belong to the set. Select this element and state why it does not belong:
Oxygen, Nitrogen, Carbon, Chlorine, Fluorine
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.
Why do elements in the same group show similar properties but the elements in different groups show different properties?
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 ?
Choose the most appropriate answer from the following list of oxides which fit the description.
An oxide which dissolves in water forming an acid.
Choose the most appropriate answer from the following list of oxides which fit the description.
An amphoteric oxide: Al2O3 (shows both acidic and basic properties)
Formula of ion of A is A2+. Element A probably belongs to ______ group.
Name and state the following with reference to the elements of the first three periods of the periodic table.
Valency of elements in Group 14 and 15.
Select the correct answer from the options given below.
It is a metal in period 2 having electronic configuration 2, 1?
