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प्रश्न
Select the correct answer from the choice in the bracket to complete the sentence:
An element ‘X’ has six electrons in its outer or valence shell. Its valency is __________.
विकल्प
+2
−2
−1
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उत्तर
An element ‘X has six electrons in its outer or valence shell. Its valency is −2.
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संबंधित प्रश्न
Write true or false for the following statement
The central pad of the atom is called nucleus.
Give the following a suitable word/phrase.
Protons and neutrons present in the nucleus.
Give the following a suitable word/phrase.
The electrons present in the outermost shell.
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
WRITE SHORT ANSWER
What is the number of neutrons present in a potassium atom ?
Name the negatively charged particle present in the atoms of all the elements.
Why is an atom neutral inspite of the presence of charged particles in it?
Name the sub-atomic particle whose charge is 0.
Define the term Valence shell.
If an atom ‘A’ has an atomic number of eleven, state the number of protons and electrons it contains.
