Advertisements
Advertisements
प्रश्न
The element X forms a compound X2Y. Suggest an element that Y might be and give reasons for your choice.
उत्तर
Y can be oxygen because oxygen has a valency of 2. As X is monovalent, Y has to be divalent in order to form the compound X2Y.
APPEARS IN
संबंधित प्रश्न
Rewrite the following statement after correction, if necessary:
Periods are the horizontal rows of elements.
Rewrite the following statement after correction, if necessary:
Isotopes are the elements of the same group.
As element X has mass number 40 and contains 21 neutrons in its atom. To which group of the periodic table does it belong?
Find the neutral atom in the periodic table which has the same number of electrons as K+ and Cl−. What is this number?
What was the basis of the earliest attempts made for classification and grouping of elements?
______ group contains the member of the halogen family.
The element with atomic number 26 will be found in group ______
Relate the names of the following scientists with the statements given below.
Arranged elements into groups containing three elements each.
Complete the following triads by inserting the missing elements.
Li, ______, K
Identify the following:
An element in Period 1 which can be placed in both Group 1 and Group 17 of the Periodic Table.
