Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

EASY

Earn 100

What is the atomic number of iron ?

Important Questions on Structure of The Atom

EASY

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Define the terms: nucleons.

EASY

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

What is radiocarbon dating?

MEDIUM

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Name two uses of radiocarbon dating.

MEDIUM

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Write brief notes on: isotopes.

EASY

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

A nitrogen atom contains

7

protons,

7

electrons and

7

neutrons. Why is it that the atomic mass of nitrogen is

14

and not

21

?

EASY

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Atomic number of chlorine is 17,

{Cl}^{-}

will have

EASY

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Define the terms: atomic number

MEDIUM

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

State four medicinal uses of isotopes.

HARD

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Give important applications of isotopes.

EASY

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Explain with examples: atomic number.

EASY

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Give a reason for different atomic masses of the isotopes of an element.

MEDIUM

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Isotopes have the same chemical properties but different physical properties. Explain.

EASY

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Atomic number of sodium is

11, {Na}^{+}

will have

EASY

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Explain with examples; mass number.

MEDIUM

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Explain why the isotopes

{}_{1}^{1}H, {}_{1}^{2}H and {}_{1}^{3}H

are electrically neutral.

MEDIUM

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Can you consider

{}_{1}^{3}H

and

{}_{2}^{3}{He}

as isotopes? Give reasons.

EASY

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Mass number is defined as:

MEDIUM

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Give one similarity and one dissimilarity between a pair of isotopes.

MEDIUM

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Give a reason for the identical chemical properties of isotopes.

MEDIUM

Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Oxygen has three isotopes:

{}^{16}O, {}^{17}O, {}^{18}O

. How do the atoms of these isotopes differ?