Question # 1

The amount of energy given out when an electron is added to any atom is called:

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lattice energy

ionization energy

electronegative

electron affinity

The symbol of sodium is :

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Sa

Na

Pa

Ca

Deuterium is used to make:

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light water

heavy water

soft water

hard water

Which gas will diffuse faster than others?

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Hydrogen

Oxygen

Chlorine

Nitrogen

Electropositive character depends upon:

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Atomic size

Nuclear charge

Ionization energy

Electron affinity

The vertical columns in the periodic table are called:

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perlods

groups

rows

blocks

Intermolecular forces are ____________ than chemical bonds.

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Stronger

Weaker

Wqual

Nil

Na__ Na++ e , what type of ionit is :

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Positive

Negative

Neutral

Charged

Water dissolves ____________ compound.

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Ionic

Polar covalent

A & B

Nil

Group runs from ________________

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Top to bottom

Left to right

Top to right

Bottom to left

Electron ________________ energy when they jump from low to higher level.

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Absorb

Radiate

Nothing

Nil

All electrolytes are:

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Conductor

Insulator

Semi conductor

Nil

Formation of water form hydrogen and oxygen is:

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Redox reaction

Acid-base reaction

Neutralization

Decomposition

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