Both protons and neutrons are also called……..
a) isotopes
b) isobars
c) nucleon
d) orbital
The number of protons and neutron in carbon atom is 6 each. What will be its atomic mass or mass number?
a) 6
b) 12
c) 36
d) 3
The number of protons and neutron in oxygen atom is 8 each. What will be its atomic mass or mass number?
a) 8
b) 16
c) 64
d) 4
Modern Periodic Table:
The periodic table, also known as the periodic table of the (chemical) elements, is a tabular display of the chemical elements. It is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of chemistry. It is a graphic formulation of the periodic law, which states that the properties of the chemical elements exhibit a periodic dependence on their atomic numbers. The table is divided into four roughly rectangular areas called blocks. The rows of the table are called periods, and the columns are called groups. Elements from the same column group of the periodic table show similar chemical characteristics.
Which of the
following rows are called periods of periodic table?
a) horizontal rows
b) vertical
columns
c) oblique rows
d) all of these
How many periods are there in modern periodic table?
a) 7
b) 8
c) 18
d) 32
You cannot say atomic mass or mass number because these both are different things.
by at 2025-03-23 05:08:25