Advertisements
Advertisements
प्रश्न
Name the type of elements which have two electrons in the outermost orbit.
Advertisements
उत्तर
Alkaline Earth metals
APPEARS IN
संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
In the Modern Periodic Table, which are the metals among the first ten elements?
Give alongside is a part of the periodic table :
As we move horizontally from left to right:
| Li | Be | B | C | N | O | F | |
| Na | Mg | Al | Si | P | S | Cl |
(i) What happens to the metallic character of the elements?
(ii) What happens to the atomic size?
Write the number of protons, neutrons and electronic configuration of \[\ce{_19^39K, _15^31P}\]. Also state their position in periodic table.
The horizontal rows in a periodic table are called _____.
Give the chemical formula of calcium phosphate
Find the odd one out and give its explanation.
How does the property vary in periods and in groups?
Which of the following statements about the Modern Periodic Table is correct:
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.
- Identify the element X
- Write the electronic configuration of X
- Write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals?
- What would be the nature (acidic/ basic) of oxides formed?
- Locate the position of the element in the Modern Periodic Table.
