Advertisements
Advertisements
प्रश्न
State what the group number in the Modern Periodic Table signifies. Give a reason why elements in the same group, have similar valency and similar chemical properties.
Advertisements
उत्तर
Group number signifies the number of electrons in the outer shell of an atom of the element.
- Number of electrons in the outer shell of all elements in a group is the same.
- Hence all elements in the same group of the periodic table have the same ‘Valency’ and similar ‘Chemical properties’.
APPEARS IN
संबंधित प्रश्न
Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?
Write the merits of the modern periodic table over Mendeleev’s Periodic table
Name the type of elements which have one electron short of octet.
How does number of (i) valence electrons (ii) valency; vary on moving from left to right in the second period of a periodic table?
Distinguish between:
s-block - p-block
Explain structure of modern periodic table in short.
______ forms the basis of the modern periodic table.
______ and ______ are called inner transition elements.
If an element X is placed in group 14, what will be the formula and the nature of bonding of its chloride?
- Write the electronic configuration of element X, given by its symbol as under: \[\ce{^40_20 X}\]
- Determine its position in the modem periodic table.
- What is the nature of its oxide?
- Name one other element of its group.
