Write scientific reason. In same period, boron and oxygen element… - Vidyadip

Question

Write scientific reason.
In same period, boron and oxygen elements have different atomic size.

✓

Answer

Boron and oxygen are placed in the same period. However, their atomic numbers are different.
Atomic number of boron is 5 and that of oxygen is 8.
In a period, as the atomic number increases from boron to oxygen, the positive charge on the nucleus increases. At the same time, electrons get added in the same outermost shell. This increases effective nuclear charge.
As a result, electrons are attracted closer to the nucleus decreasing the size of the oxygen atom.
Hence, in same period, boron and oxygen elements have different atomic size.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Give scientific reasons: [2 M]" from [ Question Bank ] - 2022→[ Question Bank ] - 2022 — all question types→Science STD 10 question papers→Maharashtra Board STD 10 question papers→Maharashtra Board question paper generator→

Similar questions

Write scientific reason.
The movie cannot be enjoyed if seat of a viewer is too close to the screen in the cinema.

Cockroach belongs to phylum Arthropoda.

We need to keep the PIN number of the debit card secret.

Write scientific reason.
The value of gravitational acceleration (g) is taken to be -g when studying the motion of an object thrown upwards in a straight line.

Frogs can live on land as well as in water.

Write scientific reason.
There was ambiguity about the correct position of hydrogen in Mendeleev’s periodic table.

Microbial enzymes are used instead of chemical catalysts in chemical industry.

Write scientific reason.
Adults need bifocal lens spectacle.

Give scientific reason.
Simple microscope is used for watch repairs.

Zinc powder reacts much faster with dil. $H _2 SO _4$ than does granulated zinc of the Same mass.