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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Name the Cation and the Anion in the Salt – Calcium Sulphate.

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प्रश्न

Name the cation and the anion in the salt – calcium sulphate

थोडक्यात उत्तर
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उत्तर

In salt the positive and negative parts exist as ions.

  1. The positively charged ions are called – cations. Na1+
  2. The negatively charged ions are called – anions. NO31−
Name of compound Formula Cation  Anion
Calcium sulphate \[\ce{CaSO4}\] \[\ce{Ca+}\] \[\ce{SO4-}\]
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पाठ 4: Atomic Structure - Exercise

संबंधित प्रश्‍न

Fill in the following blank with suitable word:

Group 1 elements are called ...............


How would the tendency to gain electrons change on moving from left to right in a period of the periodic table?


Name two elements in each case: 

Actinides


What do you understand by typical elements?


An element barium has atomic number 56. Look up its position in the periodic table and answer the following question.

What will be the formula of its phosphate?


An element E has following electronic configuration:

K

L

M

2

8

6

(a) To which group of the periodic table does element E belong?

(b) To which period of the periodic table does element E belong?

(c) State the number of valence electrons present in element E.

(d) State the valency of the element E.


What is the number of elements in the 3rd period, of the modern periodic table?


Give the chemical formula of sodium sulphite


Find the correlation:

Mendeleev’s periodic table : atomic mass : : Modern periodic table : _______


An element X which is a yellow solid at room temperature shows catenation and allotropy. X forms two oxides which are also formed during the thermal decomposition of ferrous sulphate crystals and are the major air pollutants.

  1. Identify the element X
  2. Write the electronic configuration of X
  3. Write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals?
  4. What would be the nature (acidic/ basic) of oxides formed?
  5. Locate the position of the element in the Modern Periodic Table.

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