An atom x has three electrons more than the noble gas configuration. what type of ion will it form? write the formula of its (i). sulphate, nitrate, phosphate, carbonate, hydroxide.

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Solution

$A s a t o m X h a s m o r e t h a n t h r e e e l e c t r o n t h a n t h e n o b l e g a s c o n f i g u r a t i o n, s o X h a s v a l e n c y o f 3 . F o r m u l a o f S u l p h a t e - X_{2} (S O_{4})_{3} E g ., A l_{2} (S O_{4})_{3} N i t r a t e - X (N O_{3})_{3} A l (N O_{3})_{3} P h o s p h a t e - X P O_{4} A l P O_{4} C a r b o n a t e - X_{2} (C O_{3})_{2} A l_{2} (C O_{3})_{2} H y d r o x i d e - X (O H)_{3} A l (O H)_{3}$

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An atom X has three electrons more than the noble gas configuration. What type of ion will it form ? Write the formula of its (i) sulphate (ii) nitrate (iii) phosphate (iv) carbonate (v) hydroxide.

M S O_{4}

is the formula of sulphate of metal M. Write down the formula of its :
i) Hydroxide ii) Chlorite iii) Chloride
iv) Nitrate v) Nitrite vi) Peroxide
vii) Chromate viii) Phosphate.

Q. An atom X has 2 electrons greater than its nearest noble gas. What would be the formula of its:
a) chloride
b) oxide

Q. (a) Write the symbols/formulae of two simple ions and two compound ions (or polyatomic ions).
(b) An element Y has a valency of 4. Write the formula for its :
(i) chloride
(ii) oxide
(iii) sulphate
(iv) carbonate
(v) nitrate

An element X has 7 electrons in its L shell. What is true about the element X?

I. It belongs to period 9 of modern periodic table.

II. Its atom contains 9 protons.

III. It has a valency of 7.

IV. Its atoms can accept an electron to acquire noble gas configuration.

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An atom x has three electrons more than the noble gas configuration. what type of ion will it form? write the formula of its (i). sulphate, nitrate, phosphate, carbonate, hydroxide.

As atom X has more than three electron than the noble gas configuration, so X has valency of 3. Formula of Sulphate -X2(SO4)3 Eg., Al2(SO4)3Nitrate - X(NO3)3 Al(NO3)3 Phosphate - XPO4 AlPO4Carbonate - X2(CO3)2 Al2(CO3)2Hydroxide - X(OH)3 Al(OH)3