An atom has mass "no.37" and atomic number "17" .find the no.of protons (a) 21 (b) 22 (c) 17 (d) 20

An atom has 35 nucleons and has atomis number equal to 17 . The number of electrons with n =2 , m = 0 in it is :-

Atom A has a mass number 209 and atomic number 82 Atomic B has a mass number 209 and atomic number 83 (i) How many protons atom A has ? (ii) How many protons atom B has ? (iii) Are atoms A and B isotope of the same element ?

Fill in the blanks in the following statements : (a) The number of protons in the nucleus of an atom is called its ……… (b) The total number of protons and neutrons in the nucleus of an atoms is called its ……… (c) An atom has atomic mass number 23 and atomic number 11. The atom has ....... electrons. (d) An atom of an element has 11 protons, 11 electrons and 12 neutrons. The atomic mass of the atom is ........ (e) If the nucleus of an atom has atomic number 17, mass number 37 and there are 17 electrons outside the nucleus, the number of neutrons in it is ........ (f) Almost all the mass of an atom is concentrated in a small region of space called the ........ (g) Cathode rays are a beam of fast moving ........ (h) The anode rays obtained from hydrogen gas consist of particles called ........ (i) The maximum number of electrons that can be accommodated in L shell are ........ (j) The maximum number of electrons that can go into the M shell is ....... (k) The subatomic particle not present in a hydrogen atom is ......... (l) The electron has .......... charge, the proton has ......... charge, and the neutron has .......... charge.

3, 5, 9, 11, 14, 17, 21 (a) 21 (b) 17 (c) 14 (d) 9

There are 10 protons and 17 neutrons in the nucleus of an element. What is its mass number? Options are (a) 27 (b) 7 (c) 17 (d) 10 .

Element with atomic number 17 has its place in periodic table

An atom of mass number 15 and atomic number 7 captures an alpha- particle and then emits a proton. The mass number and atomic number of the resulting product will respectively be.