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Question
Correct the statement.
Copper and zinc are representative elements.
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Solution
Copper and zinc are transition elements.
RELATED QUESTIONS
How were the positions of isotopes of an element decided in the modern periodic table?
Which of the following statement is correct in regard to the classification of elements?
(a) Elements in modern periodic table are arranged on the basis of increasing atomic masses.
(b) Elements in Mendeleev's periodic table are arranged on the basis of increasing atomic numbers.
(c) In modern periodic table, the element nickel of lower atomic mass is kept before the element cobalt of higher atomic mass.
(d) In modern periodic table, the isotopes of chlorine having different atomic masses are kept in the same group.
What is the usual number of valence electrons and valency of group 18 elements of the periodic table?
In the modern Periodic Table, why does cobalt with higher atomic mass of 58.93 appear before nickel having lower atomic mass of 58.71?
Name two elements in Inert gas.
Name the following:
The group of the Modern Periodic Table to which calcium [Ca2+] belongs.
State any five features of modern periodic table.
An element X which is a yellow solid at room temperature shows catenation and allotropy. X forms two oxides which are also formed during the thermal decomposition of ferrous sulphate crystals and are the major air pollutants.
- Identify the element X
- Write the electronic configuration of X
- Write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals?
- What would be the nature (acidic/ basic) of oxides formed?
- Locate the position of the element in the Modern Periodic Table.
Spot the error:
The elements of group 13 are called the carbon family.
Define groups of modern periodic table.
