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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 __________.
पर्याय
+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
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
Write true or false for the following statement
The maximum number of electrons in the first shell can be 8.
Give the following a suitable word/phrase.
The electrons present in the outermost shell.
Name three fundamental particles of the atom. Give the symbol with charge, on each particle.
FILL IN THE BLANK
The electrons revolving in shells close to the nucleus are called ................... electrons.
FILL IN THE BLANK
The γ-rays are............................ radiations, like light.
TRUE \ FALSE
Electrons are present in the nucleus.
Fill in the blank of the following statement :
The electron has _________ charge, the proton has _________ charge, and the neutron has _________ charge.
Select the correct answer from the choice in the bracket to complete the sentence:
Magnesium atom with electronic configuration 2, 8, 2 achieves stable electronic configuration by losing two electrons, thereby achieving stable electronic configuration of the nearest noble gas _______.
What is meant by the term subatomic particles?
