Concept explainers
Interpretation: From the given properties, the properties possessed by the given element in position 117 should be determined.
Concept Introduction:
Periodic Table: The available chemical elements are arranged considering their
In periodic table the horizontal rows are called periods and the vertical column are called group. There are seven periods and 18 groups present in the table and some of those groups are given special name as follows,
Atomic Number: Atomic number of the element is equal to the number of protons present in the nucleus of the element which is denoted by symbol Z. The superscript presents on the left side of the
Electronic configuration: It is used to denote the distribution of electrons placed over orbitals that present in the atom.
The rules followed by the electrons are as follows,
The electrons gets distributed starting from lower energy orbital to higher energy orbital, pairing of electrons starts after all the orbitals are singly filled and finally, no two electrons that have same spin can occupy the same orbital.
In periodic table the horizontal rows are called periods and the vertical column are called group.
Cation: Removal of electron from the atom results to form positively charged ion called cation.
Anion: Addition of electron to atom results to form negatively charged ion called anion.
The net charge present in the element denotes the presence or absence of electrons in the element.
Metalloid (semi-metal): The chemical element is considered as metalloid if it contains properties of both metals and the non-metals.
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CHEMISTRY:ATOMS FIRST-ALEKS 360 ACCESS
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- Name the element described in each of the following:(a) Smallest atomic radius in Group 6A(16)(b) Largest atomic radius in Period 6(c) Smallest metal in Period 3(d) Highest IE₁ in Group 4A(14)(e) Lowest IE₁ in Period 5(f) Most metallic in Group 5A(15)(g) Group 3A(13) element that forms the most basic oxide(h) Period 4 element with filled outer level(i) Condensed ground-state electron configuration of [Ne] 3s²3p²(j) Condensed ground-state electron configuration of [Kr] 5s²4d⁶(k) Forms 2ion with electron configuration [Ar] 3d³(l) Period 5 element that forms 3ion with pseudo–noble gasconfiguration(m) Period 4 transition element that forms 3diamagnetic ion(n) Period 4 transition element that forms 2 ion with a half-filled d sublevel (o) Heaviest lanthanide(p) Period 3 element whose 2 ion is isoelectronic with Ar(q) Alkaline earth metal whose cation is isoelectronic with Kr(r) Group 5A(15) metalloid with the most acidic oxidearrow_forwardWhich of the following elements is expected to have the highest SECOND IONIZATION ENERGY: (A) Be (B) Ca (C) Mg (D) Naarrow_forwardWhich of the listed elements is most metallic?(a) Al (b) N (c) P (d) Oarrow_forward
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