Advertisements
Advertisements
प्रश्न
Match the atomic number with the following:
A rare gas.
पर्याय
19
15
8
4
2
Advertisements
उत्तर
2
APPEARS IN
संबंधित प्रश्न
What is meant by a period, in a periodic table?
In what respects do the properties of group 1 elements differ from those of group 17 elements? Explain with examples by taking one element from each group.
Answer the following in respect of element `31/15 P`
Give its electronic configuration
Give the symbol and valency of the following element and radical.
Nitrogen [Nitride]
Which of the following statements about the Modern periodic table is correct?
Right or wrong sentence.
The modern periodic table has 1 to 7 periods.
Elements in the modern periodic table are arranged in ______groups and______ periods.
“Hydrogen occupies a unique position in Modern Periodic Table”. Justify the statement.
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
Name the metalloids in the first twenty elements.
