If an element has 3 electrons in the M-shell then the element is …………………
A) Mg
B) Al
C) Si
D) Na
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A shell of mass 0.020 kg is fired by a gun of mass 100 kg. If the muzzle speed of the shell is 80 m s^-1, what is the recoil speed of the gun?
Given: m1 = 0.02 kg, m2 = 100 kg, v1 = 80 m s-1 To find: Recoil speed (v2) Formula: m1u1 + m2u2 = m1v1 + m2v2 Calculation: Initially gun and shell are at rest. ∴ m1u1 + m2u2 = 0 Final momentum =...
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If number of electrons in M-shell is half of K-shell then atomic number and name of element.
B) 11, Sodium
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l = 0 — i) d – sub shell , 1 = 1 — ii) s – sub shell , 7 = 2 — iii) f – sub shell
C) a → ii, b → iv, c → i, d → iii
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Statement I: Fdi p sub shell the m values are1,0,1 ,Statement II: For d sub shell the m values are -2, -1,0,1, 2
A) Both statements are correct
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a) s – sub shell i) Maximum number of electrons is 6, b) p – sub shell ii) Maximum number of electrons is 14
C) a→iii, b→i, c→iv, d→ii
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How many orbitals make the N-shell? What is the subshell wise distribution of orbitals in the N-shell?
For N-shell principal quantum number n = 4 ∴ Total number of orbitals in N-shell = n2 = 42 = 16. The total number of subshells in N-shell = n = 4. The four...
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An element A forms a chloride ACl4 . The number of electrons in the valance shell of A.
Correct option is D) 4
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Which of the following element lose three electrons to get octet in its outer shell?
Correct option is D) Al
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AH2 is formed when element A reacts with hydrogen. Then the number of electrons in valence shell of A are generally
Correct option is A) 2
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The valence shell of the central atom of a molecule has four bond pairs of electrons. Shape of the molecule is ……………..
D) Tetrahydral
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