Advertisements
Advertisements
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
उत्तर
An element ‘X has six electrons in its outer or valence shell. Its valency is −2.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
Give the following a suitable word/phrase
The sub-atomic particle with negative charge and negligible mass.
Explain the rule with example according to which electrons are filled in various energy levels
FILL IN THE BLANK
The electrons revolving in shells close to the nucleus are called ................... electrons.
TRUE \ FALSE
Electrons are present in the nucleus.
State whether the following statement is true or false :
The anode rays obtained from all the gases consist of positively charged particles called protons.
Fill in the blank of the following statement :
The electron has _________ charge, the proton has _________ charge, and the neutron has _________ charge.
Compare an electron and a proton in respect of mass and charge.
Which of the following statement is always correct?
If an atom ‘A’ has an atomic number of eleven, state the number of protons and electrons it contains.
