# How is the modern periodic table organized quizlet?

In the modern periodic table, elements are arranged by increasing atomic number (number of protons). Properties of elements repeat in a predictable way when atomic numbers are used to arrange elements into groups. Elements are classified as metals, nonmetals, and metalloids.

In the modern periodic table, the elements are arranged according to their atomic number – not their relative atomic mass . In the periodic table the elements are arranged into: rows, called periods , in order of increasing atomic number. vertical columns, called groups , where the elements have similar properties.

Also Know, how did Mendeleev organize the periodic table of elements? Mendeleev realized that the physical and chemical properties of elements were related to their atomic mass in a ‘periodic‘ way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table.

Additionally, what is the primary characteristic by which the modern periodic table is arranged?

Answer: The correct answer is: ‘increasing atomic number’. Explanation: In the modern periodic table the elements are arranged in increasing order of their atomic numbers.An atomic number of an element represents the number of protons present in the nucleus of an atom of that element.

Why is it called the periodic table?

The periodic table got its name from the way the elements are arranged in rows which are called periods. The columns of the table are called groups, some of which have specific names, such as the noble gases and the halogens. Going down the periodic table, the number of atomic orbitals increases by one for each row.

### What is the importance of periodic table?

To summarize, the periodic table is important because it is organized to provide a great deal of information about elements and how they relate to one another in one easy-to-use reference. The table can be used to predict the properties of elements, even those that have not yet been discovered.

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### What is the main idea in the periodic law?

What is the main idea in the periodic law? That similarities in elemental properties (physical and chemical) will recur reliably, in both rows and in columns, when elements are arranged in order of (increasing) atomic number.

### What are the properties of the periodic table?

The periodic table is arranged according to periodic properties in terms of ionization energy, electronegativity, atomic radius, electron affinity, and metallic character.

### What are the parts of the periodic table?

There are nine basic groups of elements shown in the periodic table. They are the alkali metals, alkaline earth metals, transition metals, other metals, metalloids, non-metals, halogens, noble gases and rare earth elements.

Dmitri Mendeleev

### How do you classify an element?

Elements can be classified as metals, metalloids, and nonmetals, or as a main-group elements, transition metals, and inner transition metals. Groups are numbered 1–18 from left to right.

### What is the history of the periodic table?

In 1869 Russian chemist Dimitri Mendeleev started the development of the periodic table, arranging chemical elements by atomic mass. He predicted the discovery of other elements, and left spaces open in his periodic table for them. In 1886 French physicist Antoine Bequerel first discovered radioactivity.

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### What is the periodic?

The periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties. The columns, called groups, contain elements with similar chemical behaviours.

### How did Moseley arrange the elements?

When Moseley arranged the elements in the periodic table by their number of protons rather than their atomic weights, the flaws in the periodic table that had been making scientists uncomfortable for decades simply disappeared.

### What are the groups in Mendeleev’s table?

Explanation of Mendeleev’s Periodic Table: Elements are arranged in the periodic table in the increasing order of their relative atomic masses. Mendeleev divided his periodic table in eight groups and seven periods. Groups from I to VII are meant for normal elements and group VIII is for transition elements.