Advertisements
Advertisements
प्रश्न
Moseley’s periodic table is based on atomic mass.
विकल्प
True
False
Advertisements
उत्तर
False
Correct Statement: Moseley’s periodic table is based on atomic number.
APPEARS IN
संबंधित प्रश्न
An element X is in group 2 of the periodic table what will be the formula of its oxide?
The element X forms a compound X2Y. Suggest an element that Y might be and give reasons for your choice.
A non-metal X which is the largest constituent of air combines with hydrogen when heated in the presence of iron as catalyst to form a gas Y. When gas Y is treated with sulphuric acid, it forms a compound Z which is used as a chemical fertiliser.
(a) What are X, Y and Z?
(b) To which group of periodic table does X belong?
(c) Name the periodic table in which X is placed.
(d) Which element is placed just before X in the period?
(e) Which element is placed just after X in the period?
(a) How is possible valency of an element determined from the electronic configuration of its atom ?
(b) Determine the valency of an element X whose atomic number is 15.
Elements belonging to the same group have the same valency.
Write the name.
The atom having smallest atomic radius from group 1.
Identify the bond between H and F in the HF molecules.
What property forms the basis of identification?
Which of the following hydroxides is most basic?
Identify the following:
An element in Period 1 which can be placed in both Group 1 and Group 17 of the Periodic Table.
