VERON
VERON
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Features of Modern Periodic Table
Features of Modern Periodic Table
All the elements are arranged in the increasing order of their atomic number.
The horizontal rows are called periods. There are seven periods in the periodic table.
The elements are placed in periods based on the number of shells in their atoms.
Vertical columns in the periodic table starting from top to bottom are called groups. There are 18 groups in the periodic table.
Based on the physical and chemical properties of elements, they are grouped into various families.
Просмотров: 19

Видео

Periodic Classification of Elements - Chemical Properties
Просмотров 18414 дней назад
Valence electrons: Atoms of metals usually have 1,2 or 3 electrons in their outermost shell. Formation of ions: Metals form Positive ions by the loss of electrons and hence they are electro positive. Discharge of ions: Metals are discharged at the cathode during the electrolysis of their compounds. Atomicity: Molecules of metals in their vapour state are usually monoatomic. Nature of oxides: Ox...
Periodic Classification of Elements - PROPERTIES OF METALS
Просмотров 5614 дней назад
PROPERTIES OF METALS: Physical properties: Physical state: All metals are solids at room temperature except Mercury (Hg) and Gallium (Ga). Lustre: Metals possess a high lustre also called metallic lustre. Hardness: Most of the metals are hard and strong except Sodium (Na) and Potassium (K) which can be cut with a knife. Melting point and Boiling point: Usually, metals possess high melting and b...
Periodic Classification of Elements - Features of Periods
Просмотров 4714 дней назад
Periodic Classification of Elements Features of Periods The horizontal rows are called periods. There are seven periods in the periodic table. First period: Atomic number 1 and 2: This is the shortest period. It contains only two elements Hydrogen and Helium. Second period: Atomic number 3 to 10: This is a short period. It contains eight elements Lithium to Neon. Third period: Atomic number 11 ...
Multiplication Tables 2 -16 #multiplicationtables
Просмотров 62214 дней назад
#mathematics #maths #mathsclass #multiplication #multiplicationtable #multiplicationtables #multiplicationtableof2to16
Geometry - Part 2 - Find the length of the hypotenuse
Просмотров 1128 дней назад
In a right-angled triangle, the hypotenuse is 35% of the perimeter. If the perimeter is 120 cm, find the length of the hypotenuse. #mathematics #maths #mathsclass #aptitude #geometry #triangle #perimeterandarea #hypotenuse #rightangle #rightangled #rightangledtriangle
Geometry - Part 1 - Find the length of the hypotenuse
Просмотров 528 дней назад
In a right-angled triangle, the hypotenuse is 45% of the perimeter. If the perimeter is 90 cm, find the length of the hypotenuse. #mathematics #maths #mathsclass #aptitude #geometry #triangle #perimeterandarea #hypotenuse #rightangle #rightangled #rightangledtriangle
Averages - Part 5 - What is the average of the student's marks?
Просмотров 9Месяц назад
A student scored 85, 78, 92, and 67 marks out of 100 in Mathematics, English, Science and History respectively. What is the average of the student's marks? #mathematics #maths #mathsclass #aptitude #average #averageconcept #averageproblems
Averages - Part 4 - What is her average score?
Просмотров 7Месяц назад
Sarah got 90 marks in English, 80 in Mathematics, 70 in History, and 85 in Science. What is her average score? #mathematics #maths #mathsclass #aptitude #average #averageconcept #averageproblems
Averages - Part 3 - Find the average marks obtained by the student.
Просмотров 15Месяц назад
A student received 65, 74, 88, and 77 in four subjects. Find the average marks obtained by the student. #mathematics #maths #mathsclass #aptitude #average #averageconcept #averageproblems
Work and Time - Part 1
Просмотров 36Месяц назад
Jack and Mark together, Mark and John together can do a work in 45 days and 60 days respectively. If Jack is thrice as efficient as John, then find the number of days taken by Jack and John together to complete the job. #mathematics #maths #mathsclass #aptitude #workandtime #work #time #workandtimeconcept
Averages - Part 2 - Calculate his average score.
Просмотров 9Месяц назад
Paul got 82 in Biology, 90 in Chemistry, 78 in Mathematics, and 85 in Physics. Calculate his average score. #mathematics #maths #mathsclass #aptitude #average #averageconcept #averageproblems
Averages - Part 1 - Find his average marks.
Просмотров 19Месяц назад
Bryce obtained 80, 75, 75, and 60 marks (out of 100) in Botany, Zoology, Chemistry, and Physics, respectively. Find his average marks. #mathematics #maths #mathsclass #aptitude #average #averageconcept #averageproblems
Find maximum & minimum number - Python program
Просмотров 17Месяц назад
Find maximum & minimum number - Python program
Project Management and Finance Part 3
Просмотров 13Год назад
Project Management and Finance Part 3
Project Management and Finance Part 2
Просмотров 13Год назад
Project Management and Finance Part 2
Project Management and Finance Part 1
Просмотров 19Год назад
Project Management and Finance Part 1