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प्रश्न
Name the type of elements which have outermost shell incomplete.
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उत्तर
Representative elements
संबंधित प्रश्न
Fill in the following blank with suitable word:
The horizontal rows in a periodic table are called ...............
where should hydrogen be placed in the modern periodic table? Give reason for your answer.
Would you place the two isotopes of chlorine, CI-35 and CI-37 in different slots because of their different atomic masses or in the same slot because their chemical properties are the same? Justify your answer.
What is the number of valence electrons in the atoms of first elements in a period?
What is the usual number of valence electrons in the atoms of the last element in a period?
Give the group number of following elements present in periodic table
Name two elements in each case:
Actinides
Which of the given elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period?
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has a similar structure to diamond.
An element has 2 electrons in its N shell.
Is it a metal or a non-metal?
