Advertisements
Advertisements
Question
In the Modern Periodic Table – atoms of all elements are arranged according to their increasing order of – atomic numbers. An atom of nitrogen has seven protons and seven electrons. State what would be its atomic number.
Advertisements
Solution
| Atomic number | Number of protons | Number of electrons |
| Z | p | e |
| Nitrogen atom has | 7 Protens | 7 electrons |
∴ Atomic number [Z] = no. of protons [p] = no. of electrons [e]
Z = 7 = 7
∴ Atomic number of nitrogen is 7.
APPEARS IN
RELATED QUESTIONS
How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
Compare and contrast the arrangement of elements in Mendeleev’s periodic Table and the Modern Periodic Table.
Name the scientist who prepared modern periodic table.
Answer the following in respect of element `31/15 P `
To which group and period does it belong?
Fill in the blank:
The horizontal rows in the periodic table are called _____________.
Give the chemical formula of magnesium nitrate
State the number of elements in Period 3 of the Periodic Table.
Find the odd one out and give its explanation.
What is the symbol of the element Tungsten?
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.
