the atom of an element has 9 protons 9 electrons and 10 neutrons, find atomic number,mass number, electronic configuration, valance, valance electrons, metal or nonmetal, cathode and anode,period, group
Answers
Answer:
The atom with 9 protons, 9 electrons, and 10 neutrons is Flourine (F)
Explanation:
The number of protons decides the atomic number of an element. The mass number is the sum of protons and neutrons present in the nucleus. The electronic configuration is the arrangement of electrons in various shells of an atom. The number of electrons required to obtain the octet configuration is called valence or valency. The total number of electrons present in the outer shell of an atom is called valence electrons. The number of main shells will be equal to the period of the element. For p block elements, group number will be 10 added to the valence electrons.
The atomic number of Fluorine = 9
The mass number of Fluorine = 9 + 10 = 19
The electronic configuration of Flourine - 2, 7
The valency of Fluorine = 1
The valence electrons of Fluorine = 7
Fluorine is a non-metal
The period number of Fluorine = 2
The group number of Fluorine = 17
Fluorine always acts as a cathode due to its high electronegativity.
Answer:
Valency: It is defined as the combining capacity of the atom of an element with other atoms of the elements to achieve a stable configuration or complete its octet by the gain or loss of electrons.
The given element has 9 electrons in the atom. Therefore, the electronic configuration is 2, 7.
The given element has 7 electrons in its outermost or valence shell. in order to complete its octet, it will gain 1 electron to achieve a stable noble gas configuration.
Therefore, the valency of the given element is 1.
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