Advertisements
Advertisements
Question
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
Advertisements
Solution
X
APPEARS IN
RELATED QUESTIONS
If bromine atom is available in the form of, say, two isotopes `""_35^79Br (49.7%)" and """_35^81Br (50.3%)`, calculate the average atomic mass of bromine atom.
Define:- Molecule
Define: Chemical bond
Name two particles found inside the nucleus. What are they collectively called ?
Who originated the word ‘atom’ ?
State Dalton’s atomic theory.
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the atomic numebr of X ?
What value has been given to the mass of this reference atom ?
Dalton's atomic theory says that atoms are indivisible. Is this statement still valid ? Give reasons for your answer.
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
Draw the basic structure of an atom representing its –
- Subatomic particles
- Nucleus
- Orbits or shells.
Select the correct answer to the statement given below:
The smallest particle of a substance – capable of independent existence and which retains the characteristics of the substance.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
Define the following term with an example.
Element
Define – Atom.
A change in the physical state can be brought about
The smallest unit of an element is ______.
______ is a substance that is made up of three oxygen atoms chemically combined.
