WorksheetsLanguage of Chemistry
Total questions: 20
Worksheet time: 10mins
How many electrons are present in a nitride ion?
6
5
8
10
What is the formula of the compound formed between calcium and oxygen?
Which one of the following has 4 electrons in its valence shell?
C
S
P
F
A molecule of a compound is electrically _____.
neutral
positive
negative
charged
When an element exists as a molecule, each unit consists of two or more ____________.
ions
radicals
atoms
elements
How many valence electrons does silicon have?
14
4
2
28
The molecular formula for Nitric acid is ____.
The symbol and valency of ammonium radical is
Most suitable element and most widely accepted standard unit for the measurement of atomic mass is ___________.
Oxygen
Nitrogen
Carbon
Hydrogen
Phosphorus is an example of __________.
monoatomic molecules
diatomic molecules
triatomic molecules
polyatomic molecules
Which of the following forms an electropositive trivalent ion?
Aluminium
Lithium
Nickel
Cobalt
Which of the following elements has a negative valency?
Cu
Pb
S
He
Element _______ has the symbol derived from its Latin name 'plumbum'.
calcium
lead
carbon
phosphorus
The formula of silver (I) chloride is _____ .
From the elements - He, Br, Pt, & O; the element which forms a polyatomic molecule is _____.
He
Br
Pt
O
From the elements - He, Br, Pt, & O; the element _____ is liquid at room temperature.
He
Br
Pt
O
1
2
3
4
What are the constituent elements of aluminium phosphate?
Phosphorus
Oxygen
Aluminium
All of the above
A group of atoms having negative or positive charge is called ______.
ion
molecule
atom
radical
The molecular formula for Ammonium carbonate is
