An element has 16 electrons and 20 neutrons Its charge is 2 What is its mass number (2024)

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Important Questions on Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.

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Physical Sciences>Matter and Its Interactions>Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.>Structure and Properties of Matter - Each atom has a charged substructure consisting of a nucleus, which is made of protons and neutrons,surrounded by electrons.

Which will have electronic configuration $2, 8, 2$ ?

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An atom has electronic configuration2, 8. 7. What is the atomic number of this element.

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In the formation of which of the following compounds, the octet rule is not obeyed?

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If electronic configuration of an atom is $2, 8, 7$ , then atomic number of the atom will be

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Consider an imaginary ion ${}_{22}^{48}X^{3 -}$ .The nucleus contains ' $a$ ' $%$ more neutrons than the number of electrons in the ion. The value of ' $a$ ' is

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Match the following :
List -I :
(a) Frequency of distribution of the emitted radiation from a black body
(b) Spin quantum numbers(m_s)
(c) Angular Momentum
(d) All orbital have equal energy

List - II :
(i) degeneracy
(ii) temperature dependent
(iii) vector quantity
(iv) mass times velocity times radius

Codes:

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Which of the following elements has two shells, both of which are completely filled with electrons?

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Which one of the followings is correct electronic configuration of sodium?

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Hydrogen contains three types of atoms ( ${}_{1}^{1}H$ protium, ${}_{1}^{2}H$ deuterium, ${}_{1}^{3}H$ tritium).These atoms are

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Isotopes of an element contains

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Two atoms are said to be isobars if

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Two elements P and Q have $5$ and $7$ electrons in their outermost shell respectively. The atomic number of P and Q will be

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The distribution of electrons in carbon is as follows:

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Which element have two shells and both these shells are fulfilled with electrons?

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The maximum number of electrons in a shell can be show by

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How many valence electrons present in ${Cl}^{-}$ ion?

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Radioactive isotope used in the treatment of cancer disease is

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The half-life of a radioisotope is $4$ hours. If the initial mass of the isotope was $200 g$ , the mass remaining after $24$ hours undecayed

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Atomic number of an element Z is $16$ . Element Z has two isotopes $Z_{1}$ and $Z_{2}$ with $16$ and $18$ neutrons, respectively. The average atomic mass of a sample of the element Z is $32.1 μ$ . Which one of the following percentage of $Z_{1}$ and $Z_{2}$ in the sample is correct?

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In ${}_{88}R^{226}$ nucleus, there are

An element has 16 electrons and 20 neutrons Its charge is 2 What is its mass number (2024)

Important Questions on Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.

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