Chemistry 1 Dave

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 ?

Which is the most abundant element in the universe?

Elements that have properties of both metals and non metals are called?

• Transition Metals

• Hallogens

• Metaloids

• Alkali Metals

There are ...... 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