Advertisements
Advertisements
प्रश्न
An element has its electron configuration as 2, 8, 2. Now answer the following question.
What is the atomic number of this element?
Advertisements
उत्तर
The atomic number of this element is 12.
APPEARS IN
संबंधित प्रश्न
An element has its electron configuration as 2, 8, 2. Now answer the following question.
a. What is the atomic number of this element?
b. What is the group of this element?
c. To which period does this element belong?
d. With which of the following elements would this element resemble? (Atomic numbers are given in the brackets)
N(7), Be(4), Ar(18), Cl(17)
Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.
11Na, 15P, 17Cl, 14Si, 12Mg Which of these has largest atoms?
An element has its electron configuration as 2, 8, 2. Now answer the following question.
What is the group of this element?
Which pair of atomic numbers represents elements in the same group?
Which among the following elements would lose an electron easily?
Find the odd one out and give its explanation.
Write the name of noble gas having 2 electrons in its valence shell.
The number of electrons in the outermost shell of an atom determines the _______.
Write the name.
Highest electropositive element
Write the name.
The group of elements having electronic configuration 2, 2.
The valency of the elements in group 2 is 1.
The elements lithium and beryllium are in the same period because their valencies are similar.
The number of shells decreases in a group from top to bottom.
Write an Explanation.
Group
Find the period in which these elements can be placed.
4Be, 17Cl, 2He, 13Al
Write name of elements, symbol, atomic number, electronic configuration of second period in modern periodic table?
Make a chart which shows the name of the element, valency, atomic number, electronic configuration in the 2nd row of the modern periodic table and arrange these elements in ascending order of atomic mass.
What is the electronic configuration of K19?
