Definitions

Question 1

Definition of Isotopes

Answer 1

different atoms of the same element which have the same number of protons but different number of neutrons.

Question 2

Definition of Relative Mass

Answer 2

the mass compared with carbon-12 scale as a reference standard (where carbon-12 is defined as 12.0000)

Question 3

Definition of Relative isotopic mass

Answer 3

relative mass of an isotope of a particular element based on the carbon-12 scale

Question 4

The names for Group I, II, VII, 0

Answer 4

I: alkali metals
II: alkaline earth metals
VII: halogens
0: noble gases

Question 5

Name the ions that have more than one atom and only one atom

Answer 5

simple ions and polyatomic ions

Question 6

Dative ovalent bond

Answer 6

is a covalent bond formed between two atoms where both electrons of the shared pair are contributed by the same atom.

Question 7

Definition of Relative atomic mass

Answer 7

Relative atomic mass of an element is the average isotopic mass of all the natural isotopes.

Question 8

Formula of calculating the relative atomic mass

Answer 8

Average mass of an atom of the element × 12 ÷ mass of an atom of carbon-12

Question 9

Formula of calculating the relative atomic mass

Answer 9

Average mass of an atom of the element × 12 ÷ mass of an atom of carbon-12