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प्रश्न
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
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उत्तर
X
APPEARS IN
संबंधित प्रश्न
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
ANSWER IN DETAIL
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Define:- Atom
What does an atom consist of ? Explain.
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is such a particle called ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the atomic numebr of X ?
Write the full form of IUPAC.
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
Find the mass of 2 moles of nitrogen atoms.
Give brief information of three subatomic particles with reference to electrical charge, mass and location.
A radical take part – unsplit in a chemical reaction and retains its identity in reactions.
With reference to the radical –
- ammonium
- bisulphate
- carbonate
state the group of atoms present in each radical.
The smaller particles found in the atom is called ______.
K: Potassium:: C: ______.
In all atoms of an element
Give the salient features of “Modern atomic theory”.
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
Write any two observations which support the fact that atoms are divisible.
