b) The characteristic of an electrovalent composit
A they are formed by sharing of electrons.
B they are fomed between metals and non-metals
C they are formed between two non-metals
D. they often exist as a liquid
(ID) When a metal atom becomes an ion
A it loses electrons and is oxidized,
Bit gains lectrons and is reduced.
Cit gains electrons and is oxidized
D. It loses electrons and is reduced
17. Identity the following reactions as either oxidation or
reduction
(1) O +
20%
(iv) 2 2 2
18. (a) Name the charged particles which attraet one
another to form electrovalent compounds.
(b) In the formation of electrovalent compounds,
electrons are transferred from one element to
another. How are electrons involved in the formation
of a covalent compound?
(c) The electronic configuration of nitrogen is (2.3).
How many electrons in the outer shell of a nitrogen
atom are not involved in the formation of a nitrogon
molecule ?
(d) In the formation of magnesium chloride (by direct
combination between magnesium and chlorine),
name the substance that is oxidized and the
substance that is reduced.
19. What is the term defined below ?
(a) A bond formed by a shared pair of electrons each
bonding atom contributing one electron to the pair.
(b) A bond formed by transfer of electron(s).
20. Name or state the following:
(a) An element having valency zero.
(b) Metal with valeney one.
(c) Atoms of the same element dittering in mass numbers
(d) Elements having same mass number but different
atomie number
() Bond formed by transfer of electron(s).
(1) Ion formed by gain of electron(s).
21. An element X has 2 electrons in its M shell, it forms bond
with an element Y whch has 7 electrons in its thind orbit.
(a) Write the formula of the compound formed,
(b) Which nearest inert gas electronic contiguration will
element X and Y acquire.
(e) Show by orbital diagram the formation of compound
between X and X
22. In the formation of (i) oxygen molecule (it) carbon
tetrachloride molecule, state the following:
(a) Electronic configuration of nearest inert gas attained
(b) How many electrons are shared/transferred in bond
formation
(0) Which type of bonds these compounds form?
(d) Draw their orbital diagrams.
Answers
Answer:
Answer:
b) The characteristic of an electrovalent composit
A they are formed by sharing of electrons.
B they are fomed between metals and non-metals
C they are formed between two non-metals
D. they often exist as a liquid
(ID) When a metal atom becomes an ion
A it loses electrons and is oxidized,
Bit gains lectrons and is reduced.
Cit gains electrons and is oxidized
D. It loses electrons and is reduced
17. Identity the following reactions as either oxidation or
reduction
(1) O +
20%
(iv) 2 2 2
18. (a) Name the charged particles which attraet one
another to form electrovalent compounds.
(b) In the formation of electrovalent compounds,
electrons are transferred from one element to
another. How are electrons involved in the formation
of a covalent compound?
(c) The electronic configuration of nitrogen is (2.3).
How many electrons in the outer shell of a nitrogen
atom are not involved in the formation of a nitrogon
molecule ?
(d) In the formation of magnesium chloride (by direct
combination between magnesium and chlorine),
name the substance that is oxidized and the
substance that is reduced.
19. What is the term defined below ?
(a) A bond formed by a shared pair of electrons each
bonding atom contributing one electron to the pair.
(b) A bond formed by transfer of electron(s).
20. Name or state the following:
(a) An element having valency zero.
(b) Metal with valeney one.
(c) Atoms of the same element dittering in mass numbers
(d) Elements having same mass number but different
atomie number
() Bond formed by transfer of electron(s).
(1) Ion formed by gain of electron(s).
21. An element X has 2 electrons in its M shell, it forms bond
with an element Y whch has 7 electrons in its thind orbit.
(a) Write the formula of the compound formed,
(b) Which nearest inert gas electronic contiguration will
element X and Y acquire.
(e) Show by orbital diagram the formation of compound
between X and X
22. In the formation of (i) oxygen molecule (it) carbon
tetrachloride molecule, state the following:
(a) Electronic configuration of nearest inert gas attained
(b) How many electrons are shared/transferred in bond
formation
(0) Which type of bonds these compounds form?
(d) Draw their orbital diagrams.