GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The order of elements in the periodic table is based on
A
the number of protons in the nucleus
B
electric charge of nucleus
C
the number of neutrons in the nucleus
D
atomic mass
Explanation: 

Detailed explanation-1: -In the modern periodic table, the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).

Detailed explanation-2: -Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass.

Detailed explanation-3: -false 1. The number of neutrons in an atom is referred to as its atomic number. true 2. The periodic table is arranged by increasing atomic number.

Detailed explanation-4: -An element and its location in the periodic table is determined according to the number of protons in the nucleus. The electrons influence the atom’s electric charge.

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