WorksheetsChemistry 1 Dave
Total questions: 12
Worksheet time: 9mins
How many hallogens are there in period 3of the periodic table?
4
2
1
3
The element with the highest electronegativity is?
Bromine
Chlorine
Iodine
Fluorine
An atom of an element contains 20 protons, 20 neutrons and 20 electrons. The element is ?
A Halogen
An Alkali metal
An Alkaline earth metals
A noble gas
Which amongst the elements is an Alkali matal?
Boron
Magnessium
Oxygen
Sodium
The scientist who classified elements in order of increasing atomic number is ?
(a)
Which is the most abundant element in the universe?
(a)
Elements that have properties of both metals and non metals are called?
Transition Metals
Hallogens
Metaloids
Alkali Metals
There are (a) periods in the periodic table.
......... are poor conductors of heat and electricity
metals
Metalloids
Non-metals
None of the above
Group VIII elements are chemically unreactive because?
They have lectrons present in the nucleus
They don't react
They have equal number of protons and electrons
They have completely filled outermost shells
The group in which an element belong in the periodic table depends on its?
Electronegativity
Number of valence electrons
Reactivity
Number of shells
The formula used to calculate the mass number of an element is?
A=Z+N
A=Z-N
A=N-Z
A=ZxN
