Question

xxiii) The electrons in the outermost orbit of an atom are held very weakly by the
nucleus and are called:
(a) Lose electrons
(b) Weak electrons
Valence electrons
None of these
[1]
XXIV) A group of two or more different atoms, having net negative or positive charge.
such that it can retain its identity in a series of chemical reactions are:
Tons
(b) Radicals
(c) Cations
(d) Anions
Xxv) With the exception of helium, noble gases have
shell:
electrons in their valence
(b) 8
(0) 18
32
xxvi) Since all and hydrogen have 1 to 3 electrons in their valence shell they form
positively charged ions:
(a) Metals
(b) Non-metals
(c) Metalloid
(d) None of these
xxvii) Metals enter into chemical reaction with non-metals by:
Donating electrons from the valence shell
(b) Accepting electrons in the valence shell
(c) They can accept or donate electrons
(d) None of these
[1]
xxviii) A represents short form of an element:
(a) Sign
(b) Symbol
Mark
(d) Valency
[1]
XXIX)
(a)
(b)
(c)
(d)
always form negatively charged ions:
Metals
Non-metals
Both (a) and (b)
None of these
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Answer 1

Answer:

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Explanation:

nucleus and are called:

(a) Lose electrons

(b) Weak electrons

Valence electrons

None of these

[1]

XXIV) A group of two or more different atoms, having net negative or positive charge.

such that it can retain its identity in a series of chemical reactions are:

Tons

(b) Radicals

(c) Cations

(d) Anions

Xxv) With the exception of helium, noble gases have

shell:

electrons in their valence

(b) 8

(0) 18

32

xxvi) Since all and hydrogen have 1 to 3 electrons in their valence shell they form

positively charged ions:

(a) Metals

(b) Non-metals

(c) Metalloid

(d) None of these

xxvii) Metals enter into chemical reaction with non-metals by:

Donating electrons from the valence shell

(b) Accepting electrons in the valence shell

(c) They can accept or donate electrons

(d) None of these

[1]

xxviii) A represents short form of an element:

(a) Sign

(b) Symbol

Mark

(d) Valency

[1]

XXIX)

(a)

(b)

(c)

(d)

always form negatively charged ions:

Metals

Non-metals

Both (a) and (b)

None of these

TU

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